Jack Humbert d1d2b87f97 fixes s60_x keyboard
..
keymap.c fixes s60_x keyboard
readme.md fixes s60_x keyboard

readme.md

5. Hasu

This is Hasu's favorite keymap with HHKB Fn, Vi cursor and Mousekey layer. See keymap_hasu.c for detail.

(Hasu is the initial creator of the TMK firmware, in case you weren't aware.)