Add license and acknowledgement sections to README

Author: vladimir-v-diaz

README.md

@@ -0,0 +1,29 @@
+The Update Framework specification
+----------------------------------
+
+Latest: version 1.0 (Draft)
+`version 1.0 (Draft) <https://github.com/theupdateframework/specification/blob/master/tuf-spec.md>`_
+
+
+License
+-------
+
+This work is `dual-licensed <https://en.wikipedia.org/wiki/Multi-licensing>`_
+and distributed under the (1) MIT License and (2) Apache License, Version 2.0.
+Please see `LICENSE-MIT.txt
+<https://github.com/theupdateframework/specification/blob/master/LICENSE-MIT.txt>`_
+and `LICENSE-APACHE.txt
+<https://github.com/theupdateframework/specification/blob/master/LICENSE-APACHE.txt>`_.
+
+
+Acknowledgements
+----------------
+
+This project is managed by Prof. Justin Cappos and other members of the `Secure
+Systems Lab <https://ssl.engineering.nyu.edu/>`_ at NYU.
+
+This material is based upon work supported by the National Science Foundation
+under Grant Nos. CNS-1345049 and CNS-0959138. Any opinions, findings, and
+conclusions or recommendations expressed in this material are those of the
+author(s) and do not necessarily reflect the views of the National Science
+Foundation.