Can someone please update the Android D8 documentation?

[jmill...@nvidia.com]

https://github.com/v8/v8/wiki/D8-on-Android

I found a reply on here from 9 months ago about the GYP directions the wiki still has being broken, and not supported.  I've been trying to build an ARM version for a while and having good instructions would be very helpful.  Rather than my current guess and check process.