Merge pull request #9 from Sanrag/master

Partial cleanup of DisplayMediator.
Output pipeline ID into the ExperimentArg proto that is built.
Output pipeline ID into the ExperimentArg proto that is built.
Merge branch 'generator-pipeline-id' of github.com:d2rk/groningen into generator-pipeline-id
Merge pull request #11 from d2rk/generator-pipeline-id

Output pipeline ID into the ExperimentArg proto that is built.
Merge pull request #12 from Sanrag/master

Remove dependency on configFileNames for groningen to start.