Alphabetize dependencies /cc @cvrebert

package.json

@@ -28,14 +28,14 @@
   ],
   "devDependencies": {
     "grunt": "~0.4.2",
+    "grunt-banner": "~0.2.0",
     "grunt-contrib-concat": "~0.3.0",
     "grunt-contrib-copy": "~0.5.0",
     "grunt-contrib-cssmin": "~0.8.0",
     "grunt-contrib-jshint": "~0.8.0",
     "grunt-contrib-nodeunit": "~0.3.0",
-    "grunt-contrib-uglify": "~0.3.0",
-    "grunt-banner": "~0.2.0",
     "grunt-contrib-sass": "~0.7.1",
+    "grunt-contrib-uglify": "~0.3.0",
     "grunt-contrib-watch": "~0.5.3",
     "grunt-jekyll": "~0.4.1",
     "load-grunt-tasks": "~0.4.0"