chore(package): update babel-core to version 6.18.2 (#215)

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -37,7 +37,7 @@
   "devDependencies": {
     "@types/chalk": "0.4.31",
     "@types/diff": "0.0.31",
-    "babel-core": "6.18.0",
+    "babel-core": "6.18.2",
     "babel-preset-es2015": "6.18.0",
     "babel-register": "6.18.0",
     "chai": "3.5.0",