Bump version to 2.0.2 for new InvalidResponseError
Merge pull request #28 from Shopify/bump-version-to-2.0.2-for-new-invalid-response-error

Bump version to 2.0.2 for new InvalidResponseError
Make ActiveSupport version configurable.  Fix issues blocking spec runs on ActiveSupport 2.3.x.  Add .travis.yml file to run tests
Change from Test::Unit to Minitest to get compatibility across Rails versions.  Add JRuby and Rubinius.  Add Ruby 2.1.0
Add module to constant
Remove Ruby 1.8.7
Get rid of autoload