update AUTHORS file to include all contributors
-Uday Bondhugula
+AUTHOR: Uday Bondhugula <udayb@iisc.ac.in>
-uday@csa.iisc.ernet.in
+Contributions by
+
+Aravind Acharya
+Vinayaka Bandishti
+Roshan Dathathri
+Chandan G
+Anoop JS
+Taj Khan
+Arvind M
+Sven Verdoolaege
