Remove some debugging print statements
Refactor task code to be testable
Support Parallel_tests 0.16.5, arbitrary parallel_tests options

Added support for parallel_tests 0.16.5.

Can now pass arbitrary options to parallel_tests from the Sauce rake
tasks, using the 'parallel_test_options' argument, eg:

`bundle exec rake sauce:features parallel_test_options='--group-by
scenarios'

Made browser_for_file into browsers_for_location, taking filename and
location in file.

Added tests for rake parallel tasks, browsers_for_location
Overrode reset! in Capybara driver

Waiting for https://github.com/jnicklas/capybara/pull/1215 to be
resolved
Stub out REST call for testing
Stub before each call
Merge pull request #179 from DylanLacey/master

Support latest parallel_tests, arbitrary parallel_tests arguments, Capybara reset! changes