Added license file to .gitignore

.gitignore

@@ -25,6 +25,7 @@ dump*
 *ipynb_checkpoints
 **/.DS_Store
 !version.txt
+!LICENSE.txt
 !requirements.txt
 !pyproject.toml
 **/_skbuild

LICENSE.txt

@@ -0,0 +1,10 @@
+Copyright 2023 - David Minton 
+The Swiftest development team: David Minton, Carlisle Wishard, Jennifer Pouplin, Jake Elliott, Dana Singh, & Kaustub Anand
+
+This file is part of Swiftest.
+Swiftest is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License 
+as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+Swiftest is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty 
+of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+You should have received a copy of the GNU General Public License along with Swiftest. 
+If not, see: https://www.gnu.org/licenses.