Add legal text

main.py

@@ -1,5 +1,19 @@
-# RUNNING CALCULATOR CONCEPT
-# (C) 2022 - For the Sada's
+"""
+Running Calculator Concept - for the Sada's
+Copyright (C) 2022 @willtheorangeguy
+
+This program 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, version 3 of the License.
+
+This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
 
 # MATH CONSTANTS
 FT = 3.281