Release v2.0.0

Change-Id: I377b7b3914aabd3c86ed0e3d78b709b290ba8d60
diff --git a/VERSION b/VERSION
index 519af9a..227cea2 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-6.0.0.dev
+2.0.0