This is a JUCE module which provides the various UI things we've set up for tuning. Currently it contains the table model which takes a tuning from the tuning-library and bridges it to a TableListBoxModel. We use this to make the tuning-workbench-synth table and (soon) the dexed show tuning table also.
To use it, I generally add it as a submodule. So
mkdir lib
cd lib
git submodule add http://github.com/surge-synthesizer/surgesynnthteam_tuningui
the open the projucer and add a module and voila.
I will write documentation here one day I promise. For now just go look how we use this in TWSTuningGrid.h in the tuning-workbench-synth.