Change year

See https://github.com/ipfs/go-ipfs/pull/2883#issuecomment-227528997

License: MIT
Signed-off-by: Richard Littauer <richard.littauer@gmail.com>

LICENSE

 The MIT License (MIT)
 
-Copyright (c) 2016 Juan Batiz-Benet
+Copyright (c) 2014-2016 Juan Batiz-Benet
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal