Updating setup.py to install all .rst files in doc/source/examples/* to examples/*.
Include doc/examples/* in source distribution.
Merge branch 'release-0.12.0' into develop

* release-0.12.0:
  Bumping version to 0.12.0
Added Amazon ElastiCache to list of services.
Refactor clidriver/argparser for easier customization

This commit refactors the clidriver/argparser for easier
extension for plugins.  As a result, some of the functionality
in core was moved to extensions.

The main change was to allow each level of command/operation/args
to be represented as a table that is sent out as a signal.  This
allows extensions to add new commands/operations/arguments by
modifying the table.

I've also made a stab at integration tests to ensure I haven't
forgotten a feature that was previously supported.  These integration
tests actually run the `aws` command to ensure end to end testing.
Fixing a bug in handling of help on Windows platform.  Also piping ReST text through a TextWriter filter on Windows for better quality output.  Adding code to register necessary event handlers for HTML document generation.  Fixes #145.
Merge branch 'develop' of github.com:aws/aws-cli into develop
Fixing unit test.  Still needs more work but unbreaks things.
Removing test pending better help tests.
Bump nose version

1.2.x is giving tracebacks when trying to collect
error messages, upgrading will give us better error messages
on test failures.
Add docs to CLICommand class
Add docs for the help commands in clidriver
Move stream flush to formatter module
Use vars() instead of accessing __dict__ directly
Add more docs to the param arguments

I also extracted a base class BaseCLIArgument that
serves as a place to put docs for the all the arguments.
Use regex when checking help command output
Remove return statement so test is actually run
Allow buffer size to be passed in to streaming output
Add test for operation help with required params

This would previously parse the args and complain that a required
arg was not specified.  Added test to show this error.
Print traceback if debug is turned on