Add default code reviewers into OWNERS
am: 41921a275c

Change-Id: If2f09f510d0ebc72150ac99141deb35173dfd5f2
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..66d3dd9
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,2 @@
+smuckle@google.com
+trong@google.com