Add myself to LICENSE file

LICENSE

@@ -1,3 +1,4 @@
+Copyright (c) 2016-     Facebook, Inc            (Adam Paszke)
 Copyright (c) 2014-     Facebook, Inc            (Soumith Chintala)
 Copyright (c) 2011-2014 Idiap Research Institute (Ronan Collobert)
 Copyright (c) 2012-2014 Deepmind Technologies    (Koray Kavukcuoglu)
@@ -19,9 +20,9 @@ modification, are permitted provided that the following conditions are met:
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
 
-3. Neither the names of Facebook, Deepmind Technologies, NYU, NEC Laboratories America 
-   and IDIAP Research Institute nor the names of its contributors may be 
-   used to endorse or promote products derived from this software without 
+3. Neither the names of Facebook, Deepmind Technologies, NYU, NEC Laboratories America
+   and IDIAP Research Institute nor the names of its contributors may be
+   used to endorse or promote products derived from this software without
    specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"