Fix repo url, add more appropriate transition dest

Add a short option as well for convenience.
Refactor jira requests
Actually check the branch pattern to match gitjira created ones
Move git calls into separate module

This should make things cleaner and easier to test.
Refactor heavily

Move jira requests into separate modules.

Create separate configuration class.
Merge pull request #4 from mpitid/master

Cleanup + refactoring