Add aknowledgement to jibiki in Readme

Julien LepillerThu Jun 25 17:03:57+0200 2020

2eb9f09

nani/app/gradle/wrapper
namelast commitdate
gradle-wrapper.jarInitial commitSat Apr 06 13:19:46+0200 2019
gradle-wrapper.propertiesIDE updateSat Jun 06 05:09:22+0200 2020