Add .ruby-version files to .gitignore.
Split up helpers

Conflicts:
	Gemfile
	lib/helpers.rb
Add rspec and preliminary test structure

Conflicts:
	Gemfile
	Gemfile.lock
	Rakefile
Add specs for Logger, and refactor slightly.
Fix require paths for individual helper files.
Rename config.yaml to config.yaml.template.
Add config/config.yaml to .gitignore.
Add contents of db and repositories dirs to .gitignore.
Merge remote-tracking branch 'vaneyckt/improvements-and-fixes' into improvements-and-fixes

Conflicts:
	lib/helpers.rb
Add specs for ConfigFile helper.
Green-green refactor of ConfigFile helper.
Add specs for Repository helper.
Add Webmock gem for testing HTTP requests.
Add Webmocked specs for Jenkins.get_nb_of_idle_executors.
Add specs for Jenkins.start_job.
Add JSON gem for easier data setup for faraday responses.
Add specs for Jenkins.get_job_state and Jenkins.wait_on_job.
Add specs for Github.get_open_pull_requests_ids.
Add specs for Github.get_pull_request.
Add specs for Github.set_pull_request_status.