Merge pull request #103 from tmcgee/greenkeeper/eslint-3.18.0

Update eslint to the latest version 🚀

Author: tmcgee

package.json

@@ -9,7 +9,7 @@
 	"dependencies": {
         "csslint": "1.0.x",
         "babel-eslint": "~7.1.1",
-        "eslint": "~3.17.0",
+        "eslint": "~3.18.0",
         "grunt": "1.0.x",
         "grunt-postcss": "0.8.x",
         "grunt-contrib-clean": "1.0.x",