cmd/crane: generating password when creating service yaml
api: save service password when creating and updating
service: authenticating requests to services
Added How to install tsuru client in ArchLinux

From AUR: https://aur.archlinux.org/packages/tsuru/
service: send user email when creating service instance
Merge branch 'patch-1' of github.com:wpjunior/tsuru
authors, contributors: add Wilson Júnior
provision/docker: database order independent tests
cmd/tsuru-base/env: fix parser for values containing =

Fixes #738
api: always allow user registration for admin users
docs: tweaking oauth docs and layout
queue: refactor redis queue, use brpop instead of rpop in loop
cmd: added stop info.
cmd: implemented stop.
cmd: added more tests for stop command.
add tests to pool handlers
add tests to docker-pool-team-* handlers
testing: implemented Stop and Stops provisioner fake methods.
api: implemented stop handler.
api: added route for stop.