Add ability to configure a couple of things:

- Whether to parse CloudFormation metadata (which are always Strings) to Boolean or Number types
- what AWS region to use
Update README.md
Some tests for the convert_metadata method
Merge pull request #3 from sunpig/tests

Tests
Update copyright and license.
Merge pull request #2 from fanduel/release-0.0.2

Add ability to configure a couple of things: