ignore commonly used paths for bundled gems
refactor

updated gem to use bundler and bundler conventions such as making gem
name a module/namespace. Also, locked gem versions down a bit more for
future stability

main API should not have changed.
bump version to 0.6.0

due to the size of the refactor its probably worth being safe and at
least bumping the minor version of the gem
Merge pull request #5 from nhessler/refactor

Refactor