message: chore(package): update eslint to version 3.13.1
  Closes
diff: "chai": "3.5.0",
  "chai-subset": "1.3.0",
  "codemirror": "5.22.0",
  - "eslint": "3.12.2",
  + "eslint": "3.13.1",
  "eslint-plugin-babel": "4.0.0",
  "eslint-plugin-flowtype": "2.29.1",
  "flow-bin": "0.37.3",
  