Change the package name from underscore to dash
Merge pull request #1 from harikt/composer-name

Change the package name from underscore to dash
add query objects for mappers
fix package
fix package
docblock changes
standardize behind abstract class
docblock changes
finish mapper testing
use only sqlite fixture
add query test
mapper, not gateway
mappers, not gateways
Add docblocks
Merge pull request #2 from harikt/docblock

Add docblocks
docblock updates:
note the abstract is a decorator
move connection locator to Mapper so UnitOfWork works, and test UnitOfWork
specify that these are *write* connections
docblock update and capitalization fix