modify license text so that github can automatically detect the license type
-Copyright (c) 2017, the LSSTDESC CCL contributors are listed in the
-documentation ("research note") provided with this software. The
-repository can be found at https://github.com/LSSTDESC/CCL.
+Copyright (c) 2018, the LSSTDESC CCL contributors.
All rights reserved.
+The LSSTDESC CCL contributors are listed in the documentation
+("research note") provided with this software. The repository can be
+found at https://github.com/LSSTDESC/CCL.
+
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
