aws/aws-cli — pull request #513 by jamesls (2013-11-26 18:41:07+00:00)
Title: Add an 'aws configure list' command

This will show you where all the config values are coming from.
As part of this change, I also updated the commands.py module
to support subcommands. This makes it easy to create a top
level command that supports subcommands in a declarative manner.
You can now run:

* `aws configure`
* `aws configure list`

As an example, you'll see output like this:

```
Name Value Type Location
---- ----- ---- --------
profile None None
access_key ****************ABCD config_file ~/.aws/config
secret_key ****************ABCD config_file ~/.aws/config
region us-west-2 config_file ~/.aws/config
```