Add default code reviewers into OWNERS am: d837624775 am: 2d02afc967
am: d1d5443c02

Change-Id: Ifc16254c896b9a82df65834ed3b2525e297be19b
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..0be60ef
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,3 @@
+# Default code reviewers picked from top 3 or more developers.
+# Please update this list if you find better candidates.
+riggle@google.com