New facts on official docs
diff --git a/README b/README
index 916d0a7..609182f 100644
--- a/README
+++ b/README
@@ -69,6 +69,13 @@
For information about the Media Transfer Protocol, see:
http://en.wikipedia.org/wiki/Media_Transfer_Protocol
+The official 1.0 specification for MTP was released by the
+USB Implementers Forum in may, 2008. Prior to this, only a
+proprietary Microsoft version was available, and quite a few
+devices out there still use some aspects of the Microsoft
+version, which deviates from the specified standard. You can
+find the official specification here:
+http://www.usb.org/developers/devclass_docs/MTP_1.0.zip
Contributing
------------