adds source field to Transaction and Preauthorization
Update README.md
remove SSL pinning
undo README changes
Merge pull request #49 from paymill/master

Remove SSL pinning from Net::HTTP
Bump gem version
Merge branch 'master' of github.com:dkd/paymill-ruby
Move Gemfile.lock under version control
Remove rspec from Gemfile
Add Transaction#short_id
Bump minor version
Update Gemfile
Merge branch 'master' into add-missing-webhook-attributes

Conflicts:
	Gemfile
Use new rspec 3 syntax