pass current_dir to rdm gen.package command
pass current_dir to rdm gen.package command

problem: 
- having the current path implicitly derived from `pwd` is inflexible

solution: 
- provide an options to override current via CLI option
droidlabs/rdm,droidlabs/rdm,droidlabs/rdm,ddd-ruby/rdm,ddd-ruby/rdm