message: mongodb 3.0.0-rc0 support
  * mongodb 3.0.0-rc0 support
  API changes in 3.0 cause this to break. Everything else seems to work flawlessly.
  * Fix Linting and use db name parsed from URL
  * Linting
diff: +const url = require('url');
  const MongoClient = require('mongodb').MongoClient;
  module.exports = function (app) {
  const config = app.get('mongodb');
  - const promise = MongoClient.connect(config);
  + const dbName = url.parse(config).path.substring(1);
  + const promise = MongoClient.connect(config).then(client => {
  + // For mongodb <= 2.2
  + if(client.collection) {
  + return client;
  + }
  +
  + return client.db(dbName);
  + });
  app.set('mongoClient', promise);
  };
  