[changed] Update chai. Dev dependency.

Author: AlexKVal

package.json

@@ -46,7 +46,7 @@
     "babel-loader": "^5.0.0",
     "bootstrap": "^3.3.4",
     "brfs": "^1.4.0",
-    "chai": "^2.2.0",
+    "chai": "^3.0.0",
     "child-process-promise": "^1.0.1",
     "codemirror": "^5.0.0",
     "colors": "^1.0.3",
@@ -102,4 +102,4 @@
   "dependencies": {
     "classnames": "^2.0.0"
   }
-}
+}