Developer Guide

Release Process

Run launch config xtext-testing - set version - tycho.launch
Enter current version (will set to release version)
Commit changes
Run launch config xtext-testing - release - clean package.launch
Run launch config xtext-testing - set version - tycho.launch
Enter next version
Commit changes

Build

http://www.lorenzobettini.it/2015/01/creating-p2-composite-repositories-during-the-build/