Adding atomix version in 2.7 release notes

Change-Id: I4d91d7553cbb8e5fa96159db2c6752de326ff091
diff --git a/VERSION b/VERSION
index 1effb00..24ba9a3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.7
+2.7.0