Added staged app validation to stager
Added tests so we don't run before we've staged
Added StopRuntime to get container name out of cli
Removed container name from cli
REMOVED - all Dockerfile integration
Tidied up CLI
Added writer to stopruntime call
Formatting
Clean up after buildpack runner test
Clear up test dirs
Remove staging test in runtime test
Return staging errors to user
Command help now has consistent lack of caiptalisation
Added stager test to run+stage