Upgraded grunt-contrib-compress to version 1.4

Author: stevenbenner

package.json

@@ -34,7 +34,7 @@
 		"grunt": "~1.0",
 		"grunt-browserify": "~5.0",
 		"grunt-contrib-clean": "~1.0",
-		"grunt-contrib-compress": "~1.3",
+		"grunt-contrib-compress": "~1.4",
 		"grunt-contrib-concat": "~1.0",
 		"grunt-contrib-copy": "~1.0",
 		"grunt-contrib-csslint": "~2.0",