Show installation and setup instructions when cannot find php-cs-fixer

See #311. Closes #288.

docs/options.md

@@ -526,7 +526,7 @@ Path to uncrustify config file. i.e. uncrustify.cfg (Supported by Uncrustify)
 **Description**:
 
 Specify a configuration file which will override the default name of .perltidyrc (Supported by Perltidy)
-###  PHP - Cs fixer path 
+###  PHP - PHP-CS-Fixer Path 
 
 **Key**: `php_cs_fixer_path`
 

src/beautifiers/php-cs-fixer.coffee

@@ -24,7 +24,14 @@ module.exports = class PHPCSFixer extends Beautifier
                 "--level=#{options.level}" if options.level
                 "--fixers=#{options.fixers}" if options.fixers
                 tempFile = @tempFile("temp", text)
-                ], {ignoreReturnCode: true})
+                ], {
+                    ignoreReturnCode: true
+                    help: {
+                        link: "https://github.com/FriendsOfPHP/PHP-CS-Fixer"
+                        program: "php-cs-fixer.phar"
+                        pathOption: "PHP - CS Fixer Path"
+                    }
+                })
                 .then(=>
                     @readFile(tempFile)
                 )
@@ -34,7 +41,14 @@ module.exports = class PHPCSFixer extends Beautifier
                 "--level=#{options.level}" if options.level
                 "--fixers=#{options.fixers}" if options.fixers
                 tempFile = @tempFile("temp", text)
-                ], {ignoreReturnCode: true})
+                ], {
+                    ignoreReturnCode: true
+                    help: {
+                        link: "https://github.com/FriendsOfPHP/PHP-CS-Fixer"
+                        program: "php-cs-fixer.phar"
+                        pathOption: "PHP - CS Fixer Path"
+                    }
+                })
                 .then(=>
                     @readFile(tempFile)
                 )

src/languages/php.coffee

@@ -19,6 +19,7 @@ module.exports = {
 
     options:
         cs_fixer_path:
+            title: "PHP-CS-Fixer Path"
             type: 'string'
             default: ""
             description: "Path to the `php-cs-fixer` CLI executable"