Add eslint task. Needs eslintrc tweaking.

lib/db/api.js

@@ -320,7 +320,7 @@ dbapi.saveUserAccessToken = function(email, token) {
 dbapi.removeUserAccessToken = function(email, title) {
   return db.run(r.table('accessTokens').getAll(email, {
     index: 'email'
-  }).filter({"title": title}).delete())
+  }).filter({'title': title}).delete())
 }
 
 dbapi.loadAccessTokens = function(email) {