update dependencies

sergioramos · sergioramos · commit 66832328550e · 2017-06-21T00:15:27.000+01:00
diff --git a/package.json b/package.json
@@ -22,7 +22,7 @@
     "acorn": "^5.0.3"
   },
   "devDependencies": {
-    "chai": "^3.0.0",
-    "mocha": "^3.3.0"
+    "chai": "^4.0.2",
+    "mocha": "^3.4.2"
   }
 }
