Adding custom params

[Zerogiven]

Hi,

First, thanks for your great work.
Second i have a feature request cause i need to add another param "--group-add". But i don't see any method to do this in dockerman.
Docker is updating often and a "special field" for adding extra params to "docker run" would be a nice solution. Of course an extra field is also possible :)

If there is another method which i did not find, please tell me ;)

cheers