Small patch to made on_return running for own Screen's
Revert "Rearranging folders, adding docs, cleaning up `open` method"

This reverts commit fdcb948a814949fb635644b9eec9f2ffc886999f.
Merge pull request #22 from rheoli/Formotion

Properly set parent_screen when including Screen and TableScreen as a module.
Merge branch 'version-0.5' of github.com:clearsightstudio/ProMotion into version-0.5
Merge branch 'master' into version-0.5