More feature requests

I've found some time to implement a couple of minor feature requests. Thanks everyone for posting these issues! 🍩

Enhancements

• The author name can be specified with generamba gen option --author or in the Rambafile (Issue #107).
• You can reference project and test targets in your templates (Issue #110).
• The generamba setup process became more user-friendly by advising a couple of popular templates (Issue #86).