Release v2.0.0

Change-Id: I64cc55d13ca0a0de26ea72cafd2e476a3e2a2af9
diff --git a/VERSION b/VERSION
index 519af9a..227cea2 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-6.0.0.dev
+2.0.0