Add test for Options

Signed-off-by: Joern Bernhardt <jb@campudus.com>
Add Options as possible return types

Signed-off-by: Joern Bernhardt <jb@campudus.com>
Clean up cigarette butt

Signed-off-by: Joern Bernhardt <jb@campudus.com>
Update Readme that you can have Handler<AsyncResult<@Option>> params

Signed-off-by: Joern Bernhardt <jb@campudus.com>
Merge pull request #4 from Narigo/option-handlers

Option handlers