Update LICENSE

The copyright holders are on AUTHORS file.

LICENSE

@@ -1,18 +1,14 @@
-BSD 3-Clause License
+CIAA Project HW License
 
-Copyright (c) 2013-2019, ACSE & CADIEEL
-    ACSE:    http://www.sase.com.ar/asociacion-civil-sistemas-embebidos/ciaa/
-    CADIEEL: http://www.cadieel.org.ar
-
-All rights reserved.
+See the AUTHORS.md file.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
 
-* Redistributions of source code must retain the above copyright notice, this
+* Redistributions of source code must retain the AUTHORS file, this
   list of conditions and the following disclaimer.
 
-* Redistributions in binary form must reproduce the above copyright notice,
+* Redistributions in binary form must reproduce the AUTHORS file,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.