updated devDependencies

package.json

@@ -39,11 +39,11 @@
   "devDependencies": {
     "matchdep": "~0.3.0",
     "grunt": "~0.4.2",
-    "grunt-contrib-less": "~0.8.3",
-    "grunt-contrib-jshint": "~0.7.2",
+    "grunt-contrib-less": "~0.9.0",
+    "grunt-contrib-jshint": "~0.8.0",
     "grunt-bump": "0.0.11",
-    "grunt-contrib-coffee": "~0.7.0",
-    "grunt-contrib-uglify": "~0.2.7",
+    "grunt-contrib-coffee": "~0.10.0",
+    "grunt-contrib-uglify": "~0.3.2",
     "grunt-contrib-cssmin": "~0.7.0",
     "grunt-coffeelint": "0.0.8",
     "grunt-banner": "~0.2.0",