EMC2 is LTC fork, so integration process of EMC2 should be the same is integration of LTC.
GitHub: https://github.com/emc2foundation/einsteinium
Branch: Master
Latest Version: 0.13.5
Explorer to compare block height and hash: https://chainz.cryptoid.info/emc2/
more docs: https://github.com/emc2foundation/einsteinium/tree/master/doc