Test against Ruby 2.1.1
Remove submodules, use Gemfile instead
Remove bitstamp module folder
Merge pull request #14 from ukd1/feature/remove-submodule

Remove submodules, use Gemfile instead
Bump @coinbase gem to the current release, closes #12
cleans up coinbase cassettes
Merge branch 'patch-1' of https://github.com/fanquake/rbtc_arbitrage
version bump
adds bitstamp-rbtc-arbitrage gem to gemspec
merge branch 'master' into 'stathat'