chore(devDep): update dependencies version

Author: douglasduteil

package.json

@@ -9,10 +9,10 @@
   "dependencies": {},
   "devDependencies": {
     "grunt": "~0.4.1",
-    "grunt-karma": "~0.6.x",
-    "grunt-contrib-jshint": "~0.5.4",
-    "grunt-contrib-uglify": "~0.2.1",
-    "grunt-contrib-watch": "~0.4.3",
+    "grunt-karma": "~0.7.1",
+    "grunt-contrib-jshint": "~0.7.2",
+    "grunt-contrib-uglify": "~0.2.7",
+    "grunt-contrib-watch": "~0.5.3",
     "grunt-contrib-copy": "~0.4.1",
     "grunt-contrib-connect": "~0.5.0"
   },