Updates rspec and removes some gems

The travis.yml was initially removed from this branch. When I copied it again yesterday, I used the one from suspenders master branch. And they seem to have dropped ruby 1..9 support (both in the travis build and in the readme, which states:

> Suspenders requires the latest version of Ruby.

And we're certainly not going to create ruby 1.9 apps with firestarter anyway, so I see no point in supporting it