Upgrade grunt-contrib-jshint to 0.6.3.

Author: tjvantoll

package.json

@@ -57,7 +57,7 @@
 	"dependencies": {},
 	"devDependencies": {
 		"grunt": "0.4.1",
-		"grunt-contrib-jshint": "0.6.0",
+		"grunt-contrib-jshint": "0.6.3",
 		"grunt-contrib-uglify": "0.1.1",
 		"grunt-contrib-concat": "0.1.3",
 		"grunt-contrib-qunit": "0.2.0",