Pass promise library through to DB function
Pass promise library through to DB function

If the library is not properly passed, the underlying function attempts to use es-6 promises instead.
As I am not using that particular package, it crashes my app.
mongodb/node-mongodb-native,mongodb/node-mongodb-native,mongodb/node-mongodb-native,beni55/node-mongodb-native,agclever/node-mongodb-native,pakokrew/node-mongodb-native,flyingfisher/node-mongodb-native,mongodb/node-mongodb-native,HiLittleCat/node-mongodb-native