Update README.md with contribution information

Julien LepillerThu Apr 18 14:25:39+0200 2019

54b501d

nani/app/furiganatextview/src/androidTest/java/eu/lepiller/furiganatextview
namelast commitdate
ExampleInstrumentedTest.javaAdd furiganaMon Apr 15 20:09:48+0200 2019