ported API specs to minitest
deleted rspec versions of API tests
ported rspec unit tests to minitest and removed spec files
updated rake test tasks and Gemfile to remove last vestiges of rspec, updated Readme with new instructions for testing
make sure rake tasks don't run tests twice (standalone then with spork)
Merge branch 'master' of github.com:rideconnection/clearinghouse into 1400_port_api_tests

Conflicts:
	test/integration/api/v1/trip_tickets_api_test.rb
changed strftime for day of the month in trip tickets integration test, "%e" was returning " 3" which caused Capybara matcher to fail, changed to "%-d" which returns "3".
restored include of Devise::TestHelpers to original setup, change was not needed
ported two specs from another branch to minitest
Merge pull request #5 from rideconnection/1400_port_api_tests

ticket 1400 - port api tests from rspec to minitest