Przemek
In your readme you specified attribute `rv_centered="true"` Declared this attributte in that way won't work for me. Instead I changed to: `app:rv_centered="true"` and works very well Consider update readme.
As stated in the doc app should include dependency: > com.jakewharton:butterknife-gradle-plugin:9.0.0-SNAPSHOT > buildscript { repositories { google() maven { url 'https://maven.google.com/' name 'Google' } maven { url 'https://oss.sonatype.org/content/repositories/snapshots' } jcenter()...