add container creation support

Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
add support for start/stop/delete

Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Merge pull request #6 from tych0/create

Add support for create/start/stop/delete of containers