To clarify how to set this up, you need to clone HeroMod into your MCP eclipse folder. You'll need LiteLoader set up too, Mumfrey has excellent instructions for how to do that (link below).
http://www.modcoderpack.com/website/releases - MCP
https://www.assembla.com/wiki/show/liteloader/Quick_Start_Guide_-_for_advanced_users - LiteLoader
https://github.com/unknownloner/HeroModServ - Server component