fix: Update CLI flags docs (#811)

--generatedTime was documented as true by default, although immediately
after we stated that it was false by default.

Also capitalized the --exclude docs, and updated README.md's output for
consistency.

README.md

@@ -75,16 +75,16 @@ USAGE:
 OPTIONS:
    --generalInfo value, -g value          Go file path in which 'swagger general API Info' is written (default: "main.go")
    --dir value, -d value                  Directory you want to parse (default: "./")
-   --exclude value                        Exclude directories and files, comma separated
+   --exclude value                        Exclude directories and files when searching, comma separated
    --propertyStrategy value, -p value     Property Naming Strategy like snakecase,camelcase,pascalcase (default: "camelcase")
    --output value, -o value               Output directory for all the generated files(swagger.json, swagger.yaml and doc.go) (default: "./docs")
    --parseVendor                          Parse go files in 'vendor' folder, disabled by default (default: false)
    --parseDependency                      Parse go files in outside dependency folder, disabled by default (default: false)
    --markdownFiles value, --md value      Parse folder containing markdown files to use as description, disabled by default
    --codeExampleFiles value, --cef value  Parse folder containing code example files to use for the x-codeSamples extension, disabled by default
    --parseInternal                        Parse go files in internal packages, disabled by default (default: false)
-   --generatedTime                        Generate timestamp at the top of docs.go, true by default (default: false)
-   --parseDepth                        	  Dependency parse depth (default: 100)
+   --generatedTime                        Generate timestamp at the top of docs.go, disabled by default (default: false)
+   --parseDepth value                     Dependency parse depth (default: 100)
    --help, -h                             show help (default: false)
 ```
 

cmd/swag/main.go

@@ -40,7 +40,7 @@ var initFlags = []cli.Flag{
 	},
 	&cli.StringFlag{
 		Name:  excludeFlag,
-		Usage: "exclude directories and files when searching, comma separated",
+		Usage: "Exclude directories and files when searching, comma separated",
 	},
 	&cli.StringFlag{
 		Name:    propertyStrategyFlag,
@@ -80,7 +80,7 @@ var initFlags = []cli.Flag{
 	},
 	&cli.BoolFlag{
 		Name:  generatedTimeFlag,
-		Usage: "Generate timestamp at the top of docs.go, true by default",
+		Usage: "Generate timestamp at the top of docs.go, disabled by default",
 	},
 	&cli.IntFlag{
 		Name:  parseDepthFlag,