Correct typo
Remove unused code from test
Rspec/mocks is included in spec_helper
Add output of SimpleCov to gitignore
Add test for part of to_summary functionality

Small test but I think it's worth a test for the functionality that translates to a string, removes the @ and then symbolizes again.
No need for private method here

To_summary method just passed off to to_hash method, with no other modification so there's no need for this extra step.
Merge pull request #20 from alphagov/test-tidy-up

Test tidy up