Added Gitter badge
Merge pull request #974 from gitter-badger/gitter-badge

Add a Gitter chat badge to README.md
Update README.md
misc/check-contributors: remove badger@gitter.im

Bots don't care, I think.
readme: drop Gitter badge, just a link is fine
Give reason why tsuru couldn't guess name of app
Merge pull request #975 from msabramo/give_reason_why_tsuru_couldnt_guess_name_of_app

Give reason why tsuru couldn't guess name of app
docs/using: add tutorial for Java applications

This one is simpler, no need to make it more complicated.
docs/using/python: fix command name
docs/using/ruby: fix command name
docs/using/php: remove some bad whitespaces
Add ability to guess app name from dirname

This is *in addition* to guessing app name from the `tsuru` git remote.

The `tsuru` git remote is tried first and if that doesn't work, then we
take the name of the current directory and look to see if there is an
app with that name. If there is, we use that; else error out.

The main reason for adding this is that I am thinking of adding another
command that would add the git remote for the user.
docs/installing/api.rst: Include example for docker.servers

This shows folks how to configure at least one Docker server so that tsr
doesn't fail with:

    Error: You should configure the docker servers.
cmd: properly handle authentication errors in login

When login fail, we also return 401, but in this case we don't wanna
show the default unauthorized message.

Fix #964.
Godeps: update go-dockerclient
Merge pull request #976 from msabramo/guess_name_of_app_using_dirname

Add ability to guess app name from dirname
Merge pull request #914 from msabramo/docs_installing_include_docker_server_in_example_config

docs/installing/api.rst: Include example for docker.servers
misc/git-hooks: take only pushes to master on pre-receive hooks
cmd/guess: simplifying DirnameGuesser

Related to #976.
cmd: remove the client parameter from the Guesser interface

Related to #976.