fix(package): update csstips to version 0.2.1

Author: greenkeeper[bot]

package.json

@@ -113,7 +113,7 @@
   },
   "dependencies": {
     "chalk": "^1.1.3",
-    "csstips": "0.2.0",
+    "csstips": "0.2.1",
     "csx": "^8.2.1",
     "es6-promise": "^4.0.5",
     "express": "^4.14.0",