Add a Docker example for running Riak.
Reformat Gentoo install instructions to 80 columns
Update Gentoo docs to reflect the package name change from app-emulation/lxc-docker to app-emulation/docker as discussed in today's #docker-meeting
Return the process exit code for run commands
Merge builder.go into runtime.go
Add missing comments to runtime.go
Add missing package import
Please add go-dockerclient to docker API clients doc
Merge pull request #1807 from tianon/gentoo-docs

Update Gentoo docs to reflect the package name change from app-emulation/lxc-docker to app-emulation/docker
Merge pull request #1773 from hectcastro/hc-riak-example

Add a Docker example for running Riak
Merge pull request #1812 from dotcloud/return-run-exit-code

*Client: Return the process exit code for run commands
only os.Exits on error
remove docker-ruby from docs

we don't maintain it anymore as we now recommend proper HTTP api based clients instead.
Merge pull request #1836 from srid/patch-2

remove docker-ruby from docs
Merge pull request #1828 from mmikulicic/patch-1

Please add go-dockerclient to docker API clients doc
Merge pull request #1825 from dotcloud/merge-builder-runtime

Refactor to merge builder.go into runtime.go
Merge pull request #1837 from dotcloud/fix-tests-1812

only os.Exits on error
rebase master