dontmerge: Add README.md

Author: mischajonker

README.md

@@ -0,0 +1,10 @@
+ARC Buildroot
+=============
+
+This is the git repository where ARC-specific changes live before they are submitted upstream.
+
+The `arc-dev` branch is used for testing the latest patches before they are submitted; this means that patches may be rebased on top of the latest upstream status.
+
+If you do *not* need any specific feature from this repository, it is recommended that you use the upstream buildroot repository directly at http://git.buildroot.net/buildroot/
+
+There is a white paper on using Buildroot for ARC on the Synopsys website at: http://www.synopsys.com/Company/Publications/DWTB/Pages/dwtb-arc-processors-2013Q3.aspx