Adding sample configuration.properties file.
Adding support for post ingest hooks. New property called 'postIngestHooks' has been added to the configuration, where comma separated list of url can be specified. To those addresses an HTTP GET will be send right after the digital object is successfully inserted into Fedora repository. This can be used for various use-cases. Couple of template variables can be used to customize those urls. See the comments in sample configuration.properties in 'resources/sample.properties' for more details.
Adding some tests for testing the string substitution of post ingest url hooks.
Fixing the build, the params of a method being called from Java didn't match with the signature of method defined in Scala.