add README file containing source information

Bug: 10625246
Change-Id: I515920580d64a8b10ff2669dc1f0c3d1a438bf2e
diff --git a/README b/README
new file mode 100644
index 0000000..cbe2e7b
--- /dev/null
+++ b/README
@@ -0,0 +1,5 @@
+This directory contains fonts from SIL International.
+
+The canonical repository for these fonts can be found at:
+
+http://scripts.sil.org/FontDownloads