Robin/config metadata

Adding some config and metadata files.

I've also liked using http://editorconfig.org/ which comes with plugins for most popular editors. It makes it easy to make sure everyone uses the same code style (tab/spaces, 2/4 spaces etc.) 

I recently found out about how GitHub gives special treatment to any ["CONTRIBUTING.{rst,md,txt}"](CONTRIBUTING.md) file so I moved most of the README file there.

I also added a [Vagrantfile](Vagrantfile) to bootstrap an Ubuntu environment with all the prerequisites installed and port forwarding. I haven't tested it fully but the general concept works.

Also added a screenshot to the [README](README.md).

Sorry for a non-atomic (more like "molecular" och "protein") update but we aren't quite 1.0 yet anyways.