message: fix(babel): Support upcoming beta
diff: "babel-core": "^6.0.0"
  },
  "peerDependencies": {
  - "babel-core": "^6.0.0 || ^7.0.0-alpha || ^7.0.0"
  + "babel-core": "^6.0.0 || ^7.0.0-alpha || ^7.0.0-beta || ^7.0.0"
  }
  }
  