Licensing Language Fix

Added the following licensing information to the rulebook/sourcebook:

LICENSING INFORMATION

The Rapture Roleplay System (v. 2.0), which powers this game, is an open-license roleplaying game system. As such, it is licensed under CC-BY-SA 4.0.  

This game is based on Breathless, a product of Fair RPGs (https://farirpgs.com/), developed and authored by René-Pier Deshaies-Gélinas, and licensed for our use under the Creative Commons Attribution 4.0 License. Other parts of this game are based on Cairn (licensed for our use under CC-BY-SA 4.0) by Yochai Gal, Jim Parkin’s Ultralight Star Wars Roleplaying Game (also licensed under CC-BY-SA 4.0 for our uses), and Fate Core System and Fate Accelerated Edition (found at http://www.faterpg.com/), products of Evil Hat Productions, LLC, developed, authored, and edited by Leonard Balsera, Brian Engard, Jeremy Keller, Ryan Macklin, Mike Olson, Clark Valentine, Amanda Valentine, Fred Hicks, and Rob Donoghue, and licensed for our use under the Creative Commons Attribution 3.0 Unported license (http://creativecommons.org/licenses/by/3.0/).