Added README.

README

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+
+Welcome to Aristo!
+======================
+
+Introduction
+------------
+Aristo is an open source UI distributed as part of the Cappuccino Open Source Framework (cappuccino.org)
+and specifically designed for the cross platform challenges applications face today. It is a collaborative 
+effort by 280 North, Inc. and Sofa and released under the Creative Commons Attribution Share-Alike License 
+(http://creativecommons.org/licenses/by-sa/3.0/us/).
+
+You can find out more about Aristo by visiting http://cappuccino.org/aristo