+ Website: new quotes
* Website: Bigger twitter profile pictures
* Website: put Adam's and Mitchell's nice tweets on top :)
implement "-c" option to allocate a number of CPU shares to a container
if -c is not specified, do not set cpu.shares (instead of using the default value of 1024)
in the tests, use a non-default value for cpu.shares
propagate CpuShares in mergeConfig
Major rearrange of the documentation.
Updated commands index to show better title.
Small syntax fix in couchDB
Merge branch 'master' of github.com:dotcloud/docker into 471-cpu-limit
Expand upon Builder documentation and tidy

Standardizes on uppercase for instructions, gives 
example usage.
Wrap at 80 columns
Made AWS region and ami to be configurable through the ENV variables.
Make examples bash-highlighted
Remove DOCKER-VERSION, easier to maintain
Add example of multiple FROM steps
Merge pull request #584 from boffbowsh/builder-documentation

* Documentation: Updated Docker builder docs to clean up format and add new information and examples
Fixes the README build example to make it work
Added install instructions for RackSpace cloud using Ubuntu 12.04, 12.10, 13.04
updated the rackspace docs to have more information, and fixed a couple of mistakes
fixed the git clone url, it was the read-write one that required ssh access to the docker account, changed to the read only version
fix error message in export
refactor commands.go into an object, will be easier for tests