Added randA routine to util.asm

Updated jumptable.config
Reformatted randA in util.asm
Merge pull request #41 from matrefeytontias/master

Added randA routine to util.asm
Fixed getBatteryLevel for all models
Merge pull request #44 from matrefeytontias/master

Fixed getBatteryLevel for all models
Added docs for threading functions
Fixed broken build
Merge branch 'master' into writable_fs