fix(client) : add sshkey encode in client update api call
fix(fleetctl.sh): clean up unitfiles from the filesystem

Once we submit them to fleet, we don't need them anymore.
feat(router) Avoid nginx 502, 503, 504 errors
fix(client): KeyError on cookie retrieval

Fixed an issue where 'no active controller' message didn't show if
cookies didn't already exist.
docs(reference): update client reference link

The client documentation should handle an internal link to client,
while the client reference should also get its own. There are no
known links to the client reference docs, so no other changes are
necessary at this time.
docs(reference): update reference guide
docs(reference): use deis <command> as title

This makes it such that when you reference the command in the
documentation as ":ref:`deis_releases`", it shows up as "deis releases".
ref(docs/reference): aggregate client commands
style(docs/reference): missing period
fix(Makefile): remove redundant command parameter
chore(CHANGELOG.md): update for v0.10.0
Revert "docs(*): remove Rackspace support"

This reverts commit e897c8b7e7ce4cab15787c20338ab1ab72cff2e6.
chore(contrib/rackspace): bump to CoreOS 379.3
chore(docs): update CLI versions and download links
chore(release): switch master to v0.11.0
refactor(client): use semver for --version
feat(client): check server version

If the client sends a X-Deis-Version header to the server, a django
middleware class will validate and ensure that the versions are the
same. If they are not, the request is rejected, and a HttpResponse
object is returned with the client and server versions displayed.
fix(controller): reverse version output

Thanks johanneswuerbach for catching this!
test(controller): add django middleware tests
fix(client): `deis run` no longer requires remote

TESTING: try to run a command outside of the git repository:

    $ cd ..
    $ deis run --app=foo ls

If you're running a command that contains an option flag like `ls -al`, you can specify the `--`
option beforehand:

    $ deis run --app=foo -- ls -al

fixes #1086