feat(grunt-jscs): add grunt task jscs lint

Now it's possible to enforce code style linting with jscs automatically when testing or building with grunt

.jscs.json

@@ -1,4 +1,5 @@
 {
+  "validateIndentation": 2,
   "requireCurlyBraces": [
     "if",
     "else",

Gruntfile.js

@@ -5,16 +5,21 @@
 module.exports = function (grunt) {
 
   // Project configuration.
-    grunt.initConfig({
+  var config = {
     pkg: grunt.file.readJSON('package.json'),
     concat: {
       options: {
         sourceMap: true,
-                banner: ";/*! <%= pkg.name %> <%= grunt.template.today('dd-mm-yyyy') %> */\n(function(){\n",
-                footer: "}).call(this)"
+        banner: ';/*! <%= pkg.name %> <%= grunt.template.today("dd-mm-yyyy") %> */\n(function(){\n',
+        footer: '}).call(this)'
       },
       dist: {
-                src: ['src/showdown.js', 'src/helpers.js', 'src/subParsers/*.js', 'src/loader.js'],
+        src:  [
+          'src/showdown.js',
+          'src/helpers.js',
+          'src/subParsers/*.js',
+          'src/loader.js'
+        ],
         dest: 'dist/<%= pkg.name %>.js'
       }
     },
@@ -30,7 +35,21 @@ module.exports = function (grunt) {
       }
     },
     jshint: {
-            files: ['Gruntfile.js', 'src/**/*.js']
+      files: [
+        'Gruntfile.js',
+        'src/**/*.js',
+        'test/**/*.js'
+      ]
+    },
+    jscs: {
+      options: {
+        config: '.jscs.json',
+        files: [
+          'Gruntfile.js',
+          'src/**/*.js',
+          'test/**/*.js'
+        ]
+      }
     },
     simplemocha: {
       node: {
@@ -49,16 +68,20 @@ module.exports = function (grunt) {
         }
       }
     }
-    });
+  };
+
+  grunt.initConfig(config);
 
   grunt.loadNpmTasks('grunt-contrib-concat');
   grunt.loadNpmTasks('grunt-contrib-uglify');
   grunt.loadNpmTasks('grunt-contrib-jshint');
   grunt.loadNpmTasks('grunt-simple-mocha');
+  grunt.loadNpmTasks('grunt-jscs');
 
-    grunt.registerTask('test', ['jshint', 'concat', 'simplemocha']);
+  grunt.registerTask('lint', ['jshint', 'jscs']);
+  grunt.registerTask('test', ['lint', 'concat', 'simplemocha']);
   grunt.registerTask('test-without-building', ['simplemocha']);
-    grunt.registerTask('build', ['jshint', 'concat', 'test', 'uglify']);
+  grunt.registerTask('build', ['lint', 'test', 'uglify']);
 
   // Default task(s).
   grunt.registerTask('default', []);

package.json

@@ -42,6 +42,7 @@
     "grunt-contrib-concat": "^0.5.0",
     "grunt-contrib-jshint": "^0.10.0",
     "grunt-contrib-uglify": "^0.6.0",
+    "grunt-jscs": "^1.2.0",
     "grunt-simple-mocha": "^0.4.0",
     "jscs": "^1.10.0",
     "mocha": "*",