es6 and linting

.travis.yml

@@ -14,4 +14,5 @@ addons:
     - gcc-4.8
 # for some reason we have to re-install mongoose to run the tests, ugh.
 before_script: npm install mongoose@3.8.40
+script: npm run test:coverage:check
 after_script: npm run coveralls

index.js

@@ -1,8 +1,7 @@
-var Crate = require('./lib/Crate'),
-  StorageProvider = require('./lib/StorageProvider'),
-  FileProcessor = require('./lib/FileProcessor')
-
-var crate = new Crate()
+const Crate = require('./lib/Crate')
+const StorageProvider = require('./lib/StorageProvider')
+const FileProcessor = require('./lib/FileProcessor')
+const crate = new Crate()
 
 module.exports = exports = crate.plugin.bind(crate)
 module.exports.StorageProvider = StorageProvider