chore(package): update eslint to version 3.7.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -37,7 +37,7 @@
     "chai": "^3.5.0",
     "codeclimate-test-reporter": "^0.3.3",
     "coveralls": "^2.11.14",
-    "eslint": "3.6.1",
+    "eslint": "3.7.0",
     "generate-changelog": "^1.0.2",
     "istanbul": "^0.4.5",
     "mocha": "^3.0.2",