Move jshint rules into jshintrc and include from Gruntfile.

.jshintrc

@@ -0,0 +1,16 @@
+{
+    "curly": true,
+    "eqeqeq": true,
+    "immed": true,
+    "latedef": false,
+    "newcap": true,
+    "noarg": true,
+    "sub": true,
+    "undef": true,
+    "boss": true,
+    "eqnull": true,
+    "browser": true,
+    "globals": {
+      "jQuery": true
+    }
+}

Gruntfile.js

@@ -54,22 +54,7 @@ module.exports = function(grunt) {
     },
     jshint: {
       all: ['<%= concat.dist.dest %>'],
-      options: {
+      options: grunt.file.readJSON('./.jshintrc')
-        curly: true,
-        eqeqeq: true,
-        immed: true,
-        latedef: true,
-        newcap: true,
-        noarg: true,
-        sub: true,
-        undef: true,
-        boss: true,
-        eqnull: true,
-        browser: true,
-        globals: {
-          jQuery: true
-        }
-      }
     }
   });