Let me quote from rubygems.org:

>> If a file is not in the Manifest.txt it will not be included in the gem when you package and release it.

This means that we don't need and probably should not include those files in the manifest. Our travis configuration, rspec, rvm etc. are not relevant for a gem user.  I think we should get rid of all newly added files above this comment.

Everything below however does indeed belong in here..:)