Update readme

Change-Id: I33047f11264c72e313595b3684fe6eac27926c2b
Merge branch 'L5' of https://github.com/VanirAOSP/platform_manifest into EXODUS

Conflicts:
	README.mkdn

Change-Id: I51375b3a5cbde414d43eff3ad2e4a4553342e3fe
add system/core to EXODUS

Change-Id: I972efdc9e19e611031c379352cea8028269491c8