More info added to LICENSE section
Update README.md
Merge pull request #43 from rtack/master

make it easier for new contributors to get all tests running
Merge pull request #44 from rtack/master

use Keys.properties, get rid of warnings
Refactored calls to Key.INSTANCE.getKey() to private static constants.
Add comments to HerokuAPI.java, and to ...behaviours classes.
Refactoring to convert literals into constants.
Renamed APIBuilder to UriBuilder. Creating new unit test class for UriBuilder.
Refactored Muzu url settings.
start work on discogs api, simplify UriBuilder
update licence check plugin to newest version
remove FinalURLNotGeneratedException.java, url is mandatory and creation of APIReader fails if not given in constructor. Refactored APIReader