added travis config
added rake to gemfile
added rspec to gemfile.
removed support for Travis running ruby 1.8.7
Merge pull request #7 from joeletizia/travis-integration

Fixes #4 - Travis integration
fixed #5 - removed .rvmrc
fixes #6 - inspect methods, better return values
version bump
#7 - travis CI badge
Merge from upstream 'github/prezjordan/master'