Create an installation guide

[mkjensen]

At the moment, getting the application up and running is a nontrivial task because of a lot of dependencies, some of which require that the user compiles them from their sources.

This issue is related to dependency management.

[mkjensen]

A setup guide is now available at http://goo.gl/4EPWN, but it should probably be moved to GitHub for easy editing in the future.