Add more javascript checks into jshint:main.

@@ -221,7 +221,9 @@ module.exports = function (grunt) {
                     }),
                     files: {
                         src: [
-                            'src/scripts/main.js',
+                            'src/scripts/*.js',
+                            'src/scripts/model/**/*.js',
+                            'src/scripts/view/**/*.js',
                         ],
                     },
                 }