Allow to pass the option to skip certain steps to installProduct
Use pep8 to hand the parameter to GenericSetup. Append inferface-docs.
adapt to renaming steps_to_skip to blacklisted_steps in GenericSetup
Merge pull request #2 from plone/skip_steps

Allow to pass the option to skip certain steps to installProduct. Since the relevant change was merged in GernericSetup it can also go here.