Update README.txt by its new version from HARMONY-4293:([testing] documentation for BTI is obsolete)
Update README.txt by its new version from HARMONY-4293:([testing] documentation for BTI is obsolete)

svn path=/harmony/enhanced/buildtest/branches/2.0/; revision=551447

freeVM/freeVM,freeVM/freeVM,freeVM/freeVM,freeVM/freeVM,freeVM/freeVM