Clean up gemfile to speed up CI

This removes extra gems, moves pry to development group, and (temporarily?) comments out simple-cov stuff. As a result, tests on Travis CI run in under 3 minutes, rather than 7 minutes.
set up code climate integration
remove simplecov references
Merge remote-tracking branch 'origin/devel' into feature/travis
create shippable.yml (old shippable version of .travis.yml)
Merge branch 'feature/travis' into feature/code-climate

Conflicts:
	Gemfile
	spec/spec_helper.rb
Add back in shippable rspec formatter
Merge pull request #202 from cpapazian/feature/code-climate

Feature/code climate