Starting version 1.0 to then follow the semver more carefully

Change-Id: I0ec603b3ad8b3c25ddf6a5dcb11853a32b9d5384
diff --git a/VERSION b/VERSION
index ee6211d..2a6426e 100644
--- a/VERSION
+++ b/VERSION
@@ -1,2 +1,2 @@
-0.15.3
+1.0.0-dev