grunt-remove added as npm dependency since it's used in the grunt task

Author: escopecz

package.json

@@ -9,6 +9,7 @@
     "grunt-contrib-cssmin": "^0.10.0",
     "grunt-contrib-less": "^0.11.4",
     "grunt-contrib-watch": "^0.6.1",
+    "grunt-remove": "^0.1.0",
     "load-grunt-tasks": "^0.6.0",
     "time-grunt": "^1.0.0"
   }