Release 3.0.0-rc3

Updated Modulefile and README.md for release 3.0.0-rc3

Change-Id: I67ccf456109f2a32513c06f0615f1fbf0c231002
Release 3.0.0

Updated Modulefile for 3.0.0 release.

Change-Id: I91417dfdb606e38449a947fb2cc4009100d2bda6