Add signal in the kill CLI commando to send a specific signal to the service

Signed-off-by: Raúl Cumplido <raulcumplido@gmail.com>
Merge pull request #624 from drewkett/multiple_port_mappings

Support multiple port bindings for same internal port
Merge pull request #611 from raulcd/604_support_reloading_containers

Add signal in the kill CLI commando to send a specific signal to the service
Updated docker-py to 0.6.0 to fix issues with directories and symlinks

Signed-off-by: Peter Verhage <peter@egeniq.com>