Script needed for GitLab API

[dgallichan]

The ruby script for updating the repo ( _data/update.rb ) could do with also being able to handle repos that are hosted with GitLab (it can currently only do GitHub or Bitbucket). I'm assuming this is fairly straightforward, but obviously needs someone to actually implement it!

[michaelberks]

I'll try to have a look at this sometime. I've not used ruby before, but I've used the GitLab's python API which was fairly straightforward when you got the gist of it.