This README[1] has instructions for installing Karabiner-Elements and has a few examples for mapping some common keys such as caps-lock to escape:
[1] https://github.com/tekezo/Karabiner-Elements/blob/master/usa...
Re:MacOS Sierra
by hyh1048576 on Wednesday September 28, 2016 @12:18AM
(#12595393)
Does that mean Karabiner and Seil are now combined?
I mapped my Caps Lock to escape, but I just realized that it's not by Karabiner, and I need Seil from the same author to do it.
EDIT: I read the comments at above issue; the version for MacOS Sierra is being developed as "Karabiner-Elements" [1]
And you can make a donation to the author here[2].
[1] https://github.com/tekezo/Karabiner-Elements
[2] https://pqrs.org/osx/karabiner/donation.html.en