Add license to gemspec, is MIT
Bump version to 2.0.2 for new InvalidResponseError
Add OpenSSL::SSL::SSLError as a connection error class
Add CurrencyCode helper for standardizing currencies to ISO.
CurrencyCode helper shouldn't be case sensitive.
Bump for release v2.1.0
Add SocketError as a connection error class
Minor style refactor.
Raise InvalidCurrencyCodeError instead of NoMethodError for nil currencies.
Move to Minitest

* Update assertions to match those provided by Minitest
* No need for shebang in test_helper
* No need for `Bundler.setup` in test_helper
* `assert_nothing_raised` isn't available any more
Add Rake task for updating the CA cert bundle

* While I'm at it, update the certificate file
Add proxy support for connection
Bump for release 2.2.0
deploy using shipit
Bump version to 2.2.1
configure travis
improving patch support