Update dependencies to enable Greenkeeper 🌴 (#3940)

* chore(package): update dependencies

* docs(readme): add Greenkeeper badge

* Fix indent issues with eslint 4.0

see http://eslint.org/docs/user-guide/migrating-to-4.0.0\#-the-indent-rule-is-more-strict

spec/ParseLiveQueryServer.spec.js

@@ -452,7 +452,7 @@ describe('ParseLiveQueryServer', function() {
       key: 'value',
       className: testClassName
     });
-   // Make mock message
+    // Make mock message
     var message = {
       currentParseObject: parseObject
     };