Add back OWNERS to unstick windows and mac

The goal is to delete OWNERS, but since the windows and mac repos
reference this one, it seems like the OWNERS needs to be here or else
changes in those other projects are unsubmittable.

Change-Id: I19a0188133b8ad0101aa460d99da1d1f6a153701
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..d9dac65
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,2 @@
+jbakermalone@google.com
+tomrenn@google.com