cmd: move servicecli to crane and appcli to tsuru
cmd/tsuru: migrate app commands to the new pattern

Related to #117.
cmd/tsuru: using grant and revoke instead of add-team and remove-team
cmd/tsuru: changed env commands to match the new pattern

Related to #117.
cmd/tsuru: change key commands to match new commands pattern

Related to #117.
cmd/tsuru: change service related commands to match new pattern

Closes #117.
cmd/tsuru: added basic docs for the command (need improvements)
cmd/tsuru: improving docs for the command
cmd/tsuru: added restart command

Closes #94.
cmd/tsuru: cleaning up imports

Using fmt.Sprint(f) where possible to avoid import io. Not a dependency
problem, just a clean up.
cmd/tsuru: changed AppRestart to use io.Copy

Also removed useless conversion.
cmd/tsuru: some more docs

Added documentation for all app related commands.
cmd/tsuru: fix doc (using spaces)
cmd: added version field to Manager struct

Related to #121.
cmd/tsuru: fix version
cmd/tsuru: docs for version
cmd/tsuru: actual docs for version
cmd/tsuru: make tests work with the new cmd package
cmd/tsuru: typo in docs
cmd/tsuru: using tabs for blocks in docs