Updates for modern Rubies

I've found some good use for this, but needed to update it to work with Ruby 2.0.0 and Bundler. This series of commits does exactly that. 

One thing to note is that I did not attempt RubyForge integration, so there might be some work to do there if you want that to work still. It seems that much of the community has since moved to GitHub, so maybe it's unnecessary these days.

We've forked this internally and are referencing it via our own gemserver, so there's not an urgent need to push the updated version to RubyGems. However, it would certainly be nice to do so ;-)

Let me know what else I can do to improve this, if needed. As submitted, it appears to meet my needs.