mavenCentral not required
It should not be necessary anymore to add mavenCentral() to the repositories in the build scripts as indicated in the Readme. AndroidStudio projects by default include jCenter() which replaces mavenCentral().
jcenter mirrors most of the packages from Maven Central. So right now things work without adding mavenCentral(). But I consider that to be an implementation detail of jcenter, not something that will always be true. I only upload my libraries to Maven Central.
However, I'm open to changing the language in the README to make adding mavenCentral() optional. Suggestions are welcome.
Yeah, I guess simply changing the text to sth. like "add jCenter() or alternatively mavenCentral() to ... in case the library is not found" saves developers a bit time.