Update commandline Commit doc
* 'docker commit' inherits parent layer's run configuration by default
development; issue #374: Update VM documentation
new Dockerfile keyword: cmd to set a default runtime command
Merge pull request #493 from dotcloud/374-developer-environment

* hack: development; issue #374: Refactor 'make hack' making Vagrantfile and VM more useful
Merge pull request #495 from dotcloud/autorun_docs

* docs: Update commandline Commit doc
Bumped version to 0.2.1
Merge branch 'master' of ssh://github.com/dotcloud/docker
Merge pull request #482 from dotcloud/move_capabilitie_function

* runtime: Move the capabilities detection into a runtime method
- Hack: fix dockerbuilder to build feature branches
New Dockerfile operation: 'add'
Fix main Vagrantfile
refactoring run/attach/logs
* Hack: improve the way dockerbuilder is built
dockerbuilder: fix permissions
Merge branch 'origin/new-dockerbuilder'
Merge pull request #492 from kencochrane/registry-api-doc

+ Registry: added the registry API to the docker docs
Merge pull request #496 from dotcloud/480-vagrant-fix

- vagrant: Fix main Vagrantfile
use Go 1.0.3 to build docker
docker run -v PATH: bind a new data volume to a container