Add delete query param sample and test

README.md

@@ -31,6 +31,12 @@ builder.fragment = 'hash';
 // Log builder result, result: 'https://www.google.com/search?q=newKeyword#hash'
 console.log(builder.toString());
 
+// Delete Query Param
+delete builder.query.q;
+
+// Log builder result, result: 'https://www.google.com/search#hash'
+console.log(builder.toString());
+
 // Update input URI Query
 const updatedURI = UriBuilder.updateQuery(testURI, {
   q: 'test',

package.json

@@ -7,7 +7,10 @@
     "build": "gulp build",
     "test": "npm run build && node dist/test.js"
   },
-  "keywords": ["URI", "URL"],
+  "keywords": [
+    "URI",
+    "URL"
+  ],
   "homepage": "https://github.com/XuPeiYao/uriBuilder",
   "repository": {
     "type": "git",

src/test.ts

@@ -190,3 +190,13 @@ emptyBuilder.query.action = 'back';
 console.assert(
   emptyBuilder.toString() === 'http://guest@example/home/index?action=back#top'
 );
+emptyBuilder.toString();
+
+hr();
+console.info('Delete Query Param Test');
+
+delete emptyBuilder.query.action;
+console.assert(
+  emptyBuilder.toString() === 'http://guest@example/home/index#top'
+);
+console.log(emptyBuilder.toString());