Deleting unused Rails module
Adding SimpleCov
Updating sources to consume new SDK interface
Removing usage of Config and replacing with ENV
Adding client spec + helper for teardown/setup
Removing the install generator

- app and directory URL are obtained from the ENV instead of from stormpath.yml (no need to generate the stormpath.yml anymore)
Passing through any/all RAILS-related ENV values
Updating README with new steps to run Rails
Encrypting API secret/id, application and dir URL for CI
Merge pull request #6 from stormpath/chores/consume_new_sdk-5

Update Rails project to consume new Stormpath SDK