Paydici/runt commits have been added

I did two things differently this time 1. I put all my changes in a branch called "paydici" so when you merge this pull request it'll just add that branch to your repo—it won't change your master branch and 2. I added a commit that gets rake working again.

Your question about tests was a bit embarrassing: I had not run the tests. I ran them just now and I see:

191 tests, 582 assertions, 3 failures, 73 errors, 0 skips

I also notice that the rdoc for your three tutorials are removed in the "paydici" branch. I haven't tracked down the offending commit yet, so I don't know the thinking behind that removal. Perhaps it was just to slim down the gem (under the assumption that docs could be hosted elsewhere).

Anyhoo, if you'll accept this pull request we'll be able to collaborate on fixing the failures in the "paydici" branch in preparation for eventual merge with master.