ABMaterial is a mature library nowadays that requires very little to no maintenance and is used within our company extensively (together with BANano, my other Web Apps library) for many Web Apps used by thousands of users. It has not been 'taken over' by anyone and is still maintained by me, but it is open sourced for the adventurous ones.
https://www.b4x.com/android/forum/threads/abmaterial-for-dummies-beginner-lessons.88346/#content is a good place to get started. There is no such thing as a 'does everything' example. Most is demonstrated in the Demo source code (for v4.51, not yet updated for 5.00, but still useful to learn ABM):
http://gorgeousapps.com/ABMExtras4.51.zip
It's just a normal B4J module, but is not used in ABMini I think. It is however in the Demo app.
What have you already tried and what is not working? It does work on the abmaterial.com site.
Alwaysbusy