Update LICENSE file with new authors list
The authors list for Pallene now includes both the original Titan
Project developers plus everyone else who later contributed to the
Pallene branch of the project.
MIT License
-Copyright (c) 2017 The Titan Project Developers
+Copyright (c) 2018, The Titan Project Developers, The Pallene Developers
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
