Merge pull request #233 from jenius/greenkeeper-chai-3.4.1

Update chai to version 3.4.1 🚀

Author: Jeff Escalante

package.json

@@ -11,7 +11,7 @@
   "devDependencies": {
     "accord": "0.20.3",
     "autoprefixer-stylus": "0.8.1",
-    "chai": "3.4.0",
+    "chai": "3.4.1",
     "coffee-script": "1.10.0",
     "css-parse": "2.0.0",
     "mocha": "2.3.3",