diff --git a/composer.json b/composer.json
index fe5c764..cad7c96 100644
--- a/composer.json
+++ b/composer.json
@@ -20,5 +20,8 @@
         "psr-4": {
             "NdB\\PhpDocCheck\\": "src"
         }
+    },
+    "require-dev": {
+        "squizlabs/php_codesniffer": "^3.4"
     }
 }
diff --git a/phpcs.xml.dist b/phpcs.xml.dist
new file mode 100644
index 0000000..a213ca6
--- /dev/null
+++ b/phpcs.xml.dist
@@ -0,0 +1,7 @@
+<?xml version="1.0"?>
+<ruleset name="php-doc-check standard" namespace="NdB">
+    <file>./src</file>
+    <file>./bin/php-doc-check</file>
+    <exclude-pattern>*/vendor/*</exclude-pattern>
+    <rule ref="PSR2"/>
+</ruleset>
diff --git a/src/AnalysableFile.php b/src/AnalysableFile.php
index 54dcbcb..5f1b578 100644
--- a/src/AnalysableFile.php
+++ b/src/AnalysableFile.php
@@ -1,34 +1,38 @@
 <?php
 namespace NdB\PhpDocCheck;
 
-class AnalysableFile{
-	public $has_errors = false;
-	public $has_warnings = false;
-	public $findings = array();
+class AnalysableFile
+{
+    public $has_errors = false;
+    public $has_warnings = false;
+    public $findings = array();
 
-	public function __construct(\SplFileInfo $file, \PhpParser\Parser $parser, $arguments){
-		$this->file = $file;
-		$this->parser = $parser;
-		$this->arguments = $arguments;
-	}
+    public function __construct(\SplFileInfo $file, \PhpParser\Parser $parser, $arguments)
+    {
+        $this->file = $file;
+        $this->parser = $parser;
+        $this->arguments = $arguments;
+    }
 
-	public function analyse(){
-		$statements = $this->parser->parse(file_get_contents($this->file->getRealPath()));
-		$traverser  = new \PhpParser\NodeTraverser();
-		$traverser->addVisitor(new \NdB\PhpDocCheck\NodeVisitor($this));
-		$traverser->traverse($statements);
-		return $this->getProgressIndicator();
-	}
+    public function analyse()
+    {
+        $statements = $this->parser->parse(file_get_contents($this->file->getRealPath()));
+        $traverser  = new \PhpParser\NodeTraverser();
+        $traverser->addVisitor(new \NdB\PhpDocCheck\NodeVisitor($this));
+        $traverser->traverse($statements);
+        return $this->getProgressIndicator();
+    }
 
-	/**
-	 * Gives a visual progression value, based on analysis result
-	 */
-	public function getProgressIndicator() : string{
-		if(!$this->has_warnings && !$this->has_errors ){
-			return '.';
-		}elseif(!$this->has_errors){
-			return 'W';
-		}
-		return 'E';
-	}
-}
\ No newline at end of file
+    /**
+     * Gives a visual progression value, based on analysis result
+     */
+    public function getProgressIndicator() : string
+    {
+        if (!$this->has_warnings && !$this->has_errors) {
+            return '.';
+        } elseif (!$this->has_errors) {
+            return 'W';
+        }
+        return 'E';
+    }
+}
diff --git a/src/Findings/Error.php b/src/Findings/Error.php
index 409430f..9a45197 100644
--- a/src/Findings/Error.php
+++ b/src/Findings/Error.php
@@ -1,8 +1,10 @@
 <?php
 namespace NdB\PhpDocCheck\Findings;
 
-class Error extends Warning{
-	public function getType():string{
-		return 'Error';
-	}
-}
\ No newline at end of file
+class Error extends Warning
+{
+    public function getType():string
+    {
+        return 'Error';
+    }
+}
diff --git a/src/Findings/Warning.php b/src/Findings/Warning.php
index 25f6328..7cd27dd 100644
--- a/src/Findings/Warning.php
+++ b/src/Findings/Warning.php
@@ -1,19 +1,24 @@
 <?php
 namespace NdB\PhpDocCheck\Findings;
 
-class Warning{
-	public function __construct(string $message, int $line){
-		$this->message = $message;
-		$this->line = $line;
-	}
+class Warning
+{
+    public function __construct(string $message, int $line)
+    {
+        $this->message = $message;
+        $this->line = $line;
+    }
 
-	public function getType():string{
-		return 'Warning';
-	}
-	public function getLine():int{
-		return $this->line;
-	}
-	public function getMessage():string{
-		return $this->message;
-	}
-}
\ No newline at end of file
+    public function getType():string
+    {
+        return 'Warning';
+    }
+    public function getLine():int
+    {
+        return $this->line;
+    }
+    public function getMessage():string
+    {
+        return $this->message;
+    }
+}
diff --git a/src/NodeVisitor.php b/src/NodeVisitor.php
index 0a29bac..f92d6c8 100644
--- a/src/NodeVisitor.php
+++ b/src/NodeVisitor.php
@@ -5,73 +5,83 @@
 use \PhpParser\Node;
 use \PhpParser\Node\Stmt;
 
-class NodeVisitor extends \PhpParser\NodeVisitorAbstract{
-	public function __construct(AnalysableFile &$file){
-		$this->file =& $file;
-	}
+class NodeVisitor extends \PhpParser\NodeVisitorAbstract
+{
+    public function __construct(AnalysableFile &$file)
+    {
+        $this->file =& $file;
+    }
 
-	/**
-	 * Determines if this node and it's children are of a complexity that could 
-	 * use some clarification based on Cyclomatic Complexity.
-	 */
-	public function leaveNode(\PhpParser\Node $node) {
-		if(is_a($node, "\PhpParser\Node\FunctionLike")){
-			$methodCcn = $this->calculate_complexity($node) + 1; // each method by default is CCN 1 even if it's empty
-			
-			$name = 'Anonynous function';
-			if(\property_exists($node, 'name')){
-				$name = $node->name;
-			}
-			if(empty($node->getDocComment())){
-				if($methodCcn >= $this->file->arguments['complexity-error-treshold']){
-					$this->file->has_errors = true;
-					$this->file->findings[] = new \NdB\PhpDocCheck\Findings\Error(sprintf("%s has no documentation and a complexity of %d", $name, $methodCcn), $node->getStartLine());
-				}elseif($methodCcn >= $this->file->arguments['complexity-warning-treshold']){
-					$this->file->has_warnings = true;
-					$this->file->findings[] = new \NdB\PhpDocCheck\Findings\Warning(sprintf("%s has no documentation and a complexity of %d", $name, $methodCcn), $node->getStartLine());
-				}
-			}
-		}
-	}
-	
-	/**
-	 * Recursively calculates Cyclomatic Complexity
-	 */
-	protected function calculate_complexity($node){
-		$ccn = 0;
-		foreach (get_object_vars($node) as $name => $member) {
-			foreach (is_array($member) ? $member : [$member] as $memberItem) {
-				if ($memberItem instanceof Node) {
-					$ccn += $this->calculate_complexity($memberItem);
-				}
-			}
-		}
-		switch (true) {
-			case $node instanceof Stmt\If_:
-			case $node instanceof Stmt\ElseIf_:
-			case $node instanceof Stmt\For_:
-			case $node instanceof Stmt\Foreach_:
-			case $node instanceof Stmt\While_:
-			case $node instanceof Stmt\Do_:
-			case $node instanceof Node\Expr\BinaryOp\LogicalAnd:
-			case $node instanceof Node\Expr\BinaryOp\LogicalOr:
-			case $node instanceof Node\Expr\BinaryOp\LogicalXor:
-			case $node instanceof Node\Expr\BinaryOp\BooleanAnd:
-			case $node instanceof Node\Expr\BinaryOp\BooleanOr:
-			case $node instanceof Stmt\Catch_:
-			case $node instanceof Node\Expr\Ternary:
-			case $node instanceof Node\Expr\BinaryOp\Coalesce:
-				$ccn++;
-				break;
-			case $node instanceof Stmt\Case_: // include default
-				if ($node->cond !== null) { // exclude default
-					$ccn++;
-				}
-				break;
-			case $node instanceof Node\Expr\BinaryOp\Spaceship:
-				$ccn += 2;
-				break;
-		}
-		return $ccn;
-	}
-}
\ No newline at end of file
+    /**
+     * Determines if this node and it's children are of a complexity that could
+     * use some clarification based on Cyclomatic Complexity.
+     */
+    public function leaveNode(\PhpParser\Node $node)
+    {
+        if (is_a($node, "\PhpParser\Node\FunctionLike")) {
+            $methodCcn = $this->calculateComplexity($node) + 1; // each method by default is CCN 1 even if it's empty
+            
+            $name = 'Anonynous function';
+            if (\property_exists($node, 'name')) {
+                $name = $node->name;
+            }
+            if (empty($node->getDocComment())) {
+                if ($methodCcn >= $this->file->arguments['complexity-error-treshold']) {
+                    $this->file->has_errors = true;
+                    $this->file->findings[] = new \NdB\PhpDocCheck\Findings\Error(
+                        sprintf("%s has no documentation and a complexity of %d", $name, $methodCcn),
+                        $node->getStartLine()
+                    );
+                } elseif ($methodCcn >= $this->file->arguments['complexity-warning-treshold']) {
+                    $this->file->has_warnings = true;
+                    $this->file->findings[] = new \NdB\PhpDocCheck\Findings\Warning(
+                        sprintf("%s has no documentation and a complexity of %d", $name, $methodCcn),
+                        $node->getStartLine()
+                    );
+                }
+            }
+        }
+    }
+    
+    /**
+     * Recursively calculates Cyclomatic Complexity
+     */
+    protected function calculateComplexity($node)
+    {
+        $ccn = 0;
+        foreach (get_object_vars($node) as $name => $member) {
+            foreach (is_array($member) ? $member : [$member] as $memberItem) {
+                if ($memberItem instanceof Node) {
+                    $ccn += $this->calculateComplexity($memberItem);
+                }
+            }
+        }
+        switch (true) {
+            case $node instanceof Stmt\If_:
+            case $node instanceof Stmt\ElseIf_:
+            case $node instanceof Stmt\For_:
+            case $node instanceof Stmt\Foreach_:
+            case $node instanceof Stmt\While_:
+            case $node instanceof Stmt\Do_:
+            case $node instanceof Node\Expr\BinaryOp\LogicalAnd:
+            case $node instanceof Node\Expr\BinaryOp\LogicalOr:
+            case $node instanceof Node\Expr\BinaryOp\LogicalXor:
+            case $node instanceof Node\Expr\BinaryOp\BooleanAnd:
+            case $node instanceof Node\Expr\BinaryOp\BooleanOr:
+            case $node instanceof Stmt\Catch_:
+            case $node instanceof Node\Expr\Ternary:
+            case $node instanceof Node\Expr\BinaryOp\Coalesce:
+                $ccn++;
+                break;
+            case $node instanceof Stmt\Case_: // include default
+                if ($node->cond !== null) { // exclude default
+                    $ccn++;
+                }
+                break;
+            case $node instanceof Node\Expr\BinaryOp\Spaceship:
+                $ccn += 2;
+                break;
+        }
+        return $ccn;
+    }
+}
diff --git a/src/Output/AbstractOutput.php b/src/Output/AbstractOutput.php
index 10cb859..bf9a303 100644
--- a/src/Output/AbstractOutput.php
+++ b/src/Output/AbstractOutput.php
@@ -1,25 +1,29 @@
 <?php
 namespace NdB\PhpDocCheck\Output;
 
-abstract class AbstractOutput{
-	public function __construct(array $files){
-		$this->files = $files;
-	}
+abstract class AbstractOutput
+{
+    public function __construct(array $files)
+    {
+        $this->files = $files;
+    }
 
-	public function display(){
-		echo $this->get();
-	}
+    public function display()
+    {
+        echo $this->get();
+    }
 
-	/**
-	 * Determines if this scan has 'failed' and should be fixed. Or if it was
-	 * flawless. CI will fail when a non zero exit code is returned.
-	 */
-	public function getExitCode(){
-		foreach($this->files as $file){
-			if($file->has_errors || $file->has_warnings){
-				return 1;
-			}
-		}
-		return 0;
-	}
-}
\ No newline at end of file
+    /**
+     * Determines if this scan has 'failed' and should be fixed. Or if it was
+     * flawless. CI will fail when a non zero exit code is returned.
+     */
+    public function getExitCode()
+    {
+        foreach ($this->files as $file) {
+            if ($file->has_errors || $file->has_warnings) {
+                return 1;
+            }
+        }
+        return 0;
+    }
+}
diff --git a/src/Output/Json.php b/src/Output/Json.php
index d72df1d..0257f72 100644
--- a/src/Output/Json.php
+++ b/src/Output/Json.php
@@ -1,17 +1,19 @@
 <?php
 namespace NdB\PhpDocCheck\Output;
 
-class Json{
-	public function get(){
-		$output = array();
-		foreach($this->files as $file){
-			if(!empty($file->findings)){
-				$output[] = array(
-					'file'=>$file->file->getRealPath(),
-					'findings'=>$file->findings,
-				);
-			}
-		}
-		return json_encode($output);
-	}
-}
\ No newline at end of file
+class Json
+{
+    public function get()
+    {
+        $output = array();
+        foreach ($this->files as $file) {
+            if (!empty($file->findings)) {
+                $output[] = array(
+                    'file'=>$file->file->getRealPath(),
+                    'findings'=>$file->findings,
+                );
+            }
+        }
+        return json_encode($output);
+    }
+}
diff --git a/src/Output/Text.php b/src/Output/Text.php
index d05aea5..3afc82f 100644
--- a/src/Output/Text.php
+++ b/src/Output/Text.php
@@ -1,35 +1,37 @@
 <?php
 namespace NdB\PhpDocCheck\Output;
 
-class Text extends AbstractOutput{
-	/**
-	 * Outputs findings for each file analysed in a table form
-	 */
-	public function get(){
-		$output = '';
-		foreach($this->files as $file){
-			if(!empty($file->findings)){
-				$output .= "\n";
-				$output .= sprintf("Missing documentation in %s\n", $file->file->getRealPath());
-				$header = array(
-					'Severity',
-					'Message',
-					'Line'
-				);
-				$rows = array();
-				foreach($file->findings as $finding){
-					$rows[] = array(
-						$finding->getType(), 
-						$finding->getMessage(),
-						$finding->getLine()
-					);
-				}
-				$lines = (new \cli\Table($header, $rows))->getDisplayLines();
-				foreach($lines as $line){
-					$output .= $line. "\n";
-				}
-			}
-		}
-		return $output;
-	}
-}
\ No newline at end of file
+class Text extends AbstractOutput
+{
+    /**
+     * Outputs findings for each file analysed in a table form
+     */
+    public function get()
+    {
+        $output = '';
+        foreach ($this->files as $file) {
+            if (!empty($file->findings)) {
+                $output .= "\n";
+                $output .= sprintf("Missing documentation in %s\n", $file->file->getRealPath());
+                $header = array(
+                    'Severity',
+                    'Message',
+                    'Line'
+                );
+                $rows = array();
+                foreach ($file->findings as $finding) {
+                    $rows[] = array(
+                        $finding->getType(),
+                        $finding->getMessage(),
+                        $finding->getLine()
+                    );
+                }
+                $lines = (new \cli\Table($header, $rows))->getDisplayLines();
+                foreach ($lines as $line) {
+                    $output .= $line. "\n";
+                }
+            }
+        }
+        return $output;
+    }
+}