This (poorly named) repository includes config files for controller board + device combos I use. This includes several Marlin config files for printers I am using.
You should be able to check out the latest Marlin 1.1.x software and build for your machine after copying the config files over from the machine folder.
To build Marlin on your machine, follow the instructions here (I use the PlatformIO CLI).
Currently, the following machines are included:
Printrbot Simple Pro chassis using an Einsy Rambo as the controller board.
Printrbot Model3 using a Rambo v1.4 as the controller board.