(fix) Changed example to use repo's actual url

Example that showed how to add repo as upstream referenced an example url, which has now been fixed to show the repo's actual URL which will be more useful when reading it and following along.
Basic server skeleton with local mongo database. Currently untested.
(feat) Implemented basic node server and mongo database
Merge pull request #12 from Alphabat/feat

(Feat) Implement basic node server and mongo database