Adding DDM Team Signature to README.md, which really is just a test for the Packagist webhook.
Flatens the src Directory using PSR-4 autoloading

Moves files from /src/DDM/Knobby to /src and updates the psr-4
defination in the composer.json file to work with the shallower
directory.
Merge pull request #3 from janiv/psr4ShallowSrc

Flattens the src Directory using PSR-4 autoloading