Update package.json for update submodules

package.json

@@ -25,7 +25,7 @@
 	"devDependencies": {
 		"grunt-compare-size": ">=0.1.0",
 		"grunt-git-authors": ">=1.0.0",
-		"grunt-update-submodules": ">=0.1.0",
+		"grunt-update-submodules": ">=0.1.2",
 		"grunt": "~0.3.17",
 		"testswarm": "0.2.2"
 	},