Rewrite AUTHORS file.

AUTHORS

-Authors: Nicolas Mansard, Olivier Stasse, François Keith, François Bleibel 
\ No newline at end of file
+This package was written by and with the assistance of
+
+* François Bleibel              FIXME
+* François Keith                francois.keith@aist.go.jp
+* Nicolas Mansard               FIXME
+* Thomas Moulardd               thomas.moulard@gmail.com
+* Olivier Stasse                olivier.stasse@aist.go.jp