Update JSHint's options.

Author: XhmikosR

.jshintrc

@@ -1,13 +1,14 @@
 {
+  "boss": true,
   "curly": true,
   "eqeqeq": true,
+  "eqnull": true,
   "immed": true,
   "latedef": true,
   "newcap": true,
   "noarg": true,
+  "node": true,
   "sub": true,
   "undef": true,
-  "boss": true,
-  "eqnull": true,
-  "node": true
+  "unused": true
 }

Gruntfile.js

@@ -284,7 +284,7 @@ module.exports = function(grunt) {
 
     var done = this.async();
 
-    function onComplete(error, result, code) {
+    function onComplete(error, result) {
       grunt.log.write("\n > " + result.stdout.split("\n").join("\n > ") + "\n");
       var rv = error ? true : new Error("Task " + task + " unexpectedly passed.");
       done(rv);

tasks/lib/uglify.js

@@ -10,7 +10,6 @@
 
 // External libs.
 var path = require('path');
-var fs = require('fs');
 var UglifyJS = require('uglify-js');
 var _ = require('lodash');
 var uriPath = require('uri-path');
@@ -175,7 +174,6 @@ exports.init = function(grunt) {
     if (options.sourceMap) {
 
       var destBasename = path.basename(dest);
-      var destPath     = path.dirname(dest);
       var sourceMapIn;
       if (options.sourceMapIn) {
         sourceMapIn = grunt.file.readJSON(options.sourceMapIn);