chore(package): update chai to version 4.1.0

greenkeeper[bot] · greenkeeper[bot] · commit 0b01d0f23f02 · 2017-07-12T00:44:15.000Z
Closes #4
diff --git a/package.json b/package.json
@@ -30,7 +30,7 @@
     "test": "mocha"
   },
   "devDependencies": {
-    "chai": "^3.5.0",
+    "chai": "^4.1.0",
     "mocha": "^3.2.0"
   }
 }
