remove ruby-debug from Gemfile for 1.9.1
add ruby-debug to Gemfile
Remove dependency on jeweler.
- Allows us to have an always-up-to-date gemspec.
- Use bundler's build/install/release rake tasks rather than jeweler's.
- One less development dependency.
- No need for a separate VERSION file.
add watchr to Gemfile
update to aruba 0.2.0
Development env now works correctly with bundler.