Document how pierone image is used

[wontheone1]

even if pierone image -h has some documentation, still I am not sure how to use pierone image command. Tried everything and all failed. I think there needs to be a documentation showing some example usage.

What I tried.

$ pierone image sideline-functional-tests
Image sideline-functional-tests not found

$ pierone image pierone.stups.zalan.do/quanta/sideline-functional-tests
Image pierone.stups.zalan.do/quanta/sideline-functional-tests not found

$ pierone image --url pierone.stups.zalan.do wms-gateway
Image wms-gateway not found