Updating README.md to add acknowledgements

Author: pavanky

README.md

@@ -118,3 +118,26 @@ You are now good to go!
 ## Note
 
 This is a work in progress and is not intended for production use.
+
+## Acknowledgements
+
+The ArrayFire library is written by developers at [ArrayFire](http://arrayfire.com) LLC
+with [contributions from several individuals](https://github.com/arrayfire/arrayfire_python/graphs/contributors).
+
+The developers at ArrayFire LLC have received partial financial support
+from several grants and institutions. Those that wish to receive public
+acknowledgement are listed below:
+
+<!--
+The following section contains acknowledgements for grant funding. In most
+circumstances, the specific phrasing of the text is mandated by the grant
+provider. Thus these acknowledgements must remain intact without modification.
+-->
+
+### Grants
+
+This material is based upon work supported by the DARPA SBIR Program Office
+under Contract Numbers W31P4Q-14-C-0012 and W31P4Q-15-C-0008.
+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 DARPA SBIR Program Office.