Updated devDependencies.

Author: blueimp

package.json

@@ -33,9 +33,9 @@
     }
   ],
   "devDependencies": {
-    "grunt": "~0.4.1",
-    "grunt-contrib-uglify": "~0.2.7",
-    "grunt-contrib-jshint": "~0.7.1",
-    "grunt-bump-build-git": "~1.0.0"
+    "grunt": "~0.4.5",
+    "grunt-contrib-uglify": "~0.5.0",
+    "grunt-contrib-jshint": "~0.10.0",
+    "grunt-bump-build-git": "~1.1.1"
   }
 }