Update devDependencies.

[skip sauce]

package.json

@@ -43,14 +43,14 @@
     "grunt-contrib-cssmin": "~0.14.0",
     "grunt-contrib-qunit": "~0.7.0",
     "grunt-contrib-sass": "^0.9.2",
-    "grunt-contrib-uglify": "~0.9.2",
+    "grunt-contrib-uglify": "~0.10.0",
     "grunt-contrib-watch": "~0.6.1",
     "grunt-csscomb": "~3.1.0",
     "grunt-eslint": "^17.1.0",
     "grunt-exec": "~0.4.6",
     "grunt-html": "~5.0.0",
     "grunt-jekyll": "~0.4.2",
-    "grunt-jscs": "~2.1.0",
+    "grunt-jscs": "~2.2.0",
     "grunt-line-remover": "0.0.2",
     "grunt-postcss": "^0.7.0",
     "grunt-sass": "^1.0.0",