chore(package): update eslint to version 4.1.1 (#159)

Closes #158

Author: briancavalier

package.json

@@ -42,7 +42,7 @@
     "buba": "^4.0.1",
     "buble": "^0.15.2",
     "coveralls": "^2.12.0",
-    "eslint": "^3.19.0",
+    "eslint": "^4.1.1",
     "eslint-config-standard": "^10.2.1",
     "eslint-plugin-import": "^2.2.0",
     "eslint-plugin-node": "^5.0.0",