chore(package): update babel-eslint to version 7.0.0 (#2267)

https://greenkeeper.io/

Author: greenkeeperio-bot

Diff for: package.json

@@ -35,7 +35,7 @@
     "prepublish": "gulp build"
   },
   "dependencies": {
-    "babel-eslint": "^6.1.2",
+    "babel-eslint": "^7.0.0",
     "babel-plugin-syntax-class-properties": "^6.13.0",
     "babel-plugin-syntax-flow": "^6.13.0",
     "babel-plugin-transform-flow-strip-types": "^6.14.0",