* Port personal keymap to 60_tsangan_hhkb
- add 60_tsangan_hhkb layout to plain60
- Fix bug in split rs in plain60
- use community and user based layout for 60_tsangan_hhkb
- set up audio for plain60 only
* Add LAYOUT_60_ansi_split_bs_rshift
This is a place for users to put code that they might use between keyboards. If you build the keymap mine, /users/mine/rules.mk will be included in your build, and /users/mine/ will be in your path - keep these things in mind when naming your files and referencing them from other places.