Added a way to more easily share and test examples in docs
Created a Sphinx plugin to inject PHPUnit test snippets into RST output
Added testable example code for Amazon S3 and Amazon DynamoDB
Updated Sphinx plugin to better cache service descriptions
Adding more flexibility to integ tests and examples
Adding descriptions to examples
Fixing example description
Merge pull request #65 from aws/examples

Adding the ability to share integ tests as examples