Add instructions to update generator-playbook.
Merge pull request #23 from centresource/feature/add-update-instructions

Add instructions to update generator-playbook.
prefix bitters install with bundle exec
Update README file ending to match Yeoman recipe.
Merge pull request #27 from centresource/bug/readme-file-ending

Update README file ending to match Yeoman recipe.
Merge pull request #25 from ryane/master

prefix bitters install with bundle exec
Version bump.
Merge branch master.
Work on restructuring.