Add teardown ability

[NigelGreenway]

@cdrx What are you thoughts to creating an end point to remove containers from Rancher?

My use case is I use this currently to add and push changes to review branches but would be up for writing further code to allow for the following:

# With current upgrade options but reword the command
deploy {...options}

#  Will destroy the container with current options
teardown {...options} 

I was thinking of doing this all in GoLang as a way to learn but happy to use this project if possible?

Would require the package to be bumped to v2.0.0 though, but I could put some changes in to warn of deprecation's if that possible?