add composer.json and LICENSE
add .gitignore for vendor
add Application
add Flow.php and version
Abstract Command for Application
specialize getDefaultCommands
Merge branch 'feature-application' into dev
implement VersionCommand
Merge branch 'feature-version' into dev
makes flow executable, fixes #1
Merge branch 'feature-executable' into dev
add getFlow to Command and Application
add StartFeatureCommand
add Flow::startFeature
extract git calls to Git class
requires symfony/process
convert Git calls to symfony/process
move exception to Git::run
checkout branch after start:feature
Merged in feature-start (pull request #1)

feature `start:feature`