Also see CONTRIBUTING.md
Full developer documentation for OMERO is available from http://www.openmicroscopy.org/site/support/omero5/developers/
For general guidance on contributing to OME projects, see http://www.openmicroscopy.org/site/support/contributing/
If you are looking for something else, please refer to the main OME website http://www.openmicroscopy.org