Add pitch help screen

Julien LepillerThu Jun 11 04:21:54+0200 2020

376ce00

nani/app/furiganatextview/src/main/res/values
namelast commitdate
attrs.xmlAdd furiganaMon Apr 15 20:09:48+0200 2019
strings.xmlAdd furiganaMon Apr 15 20:09:48+0200 2019