README license and attribution information

.gitignore

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+*.sw*

README.md

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-# bullet-system-stick
+# Bullet System Stick
 
 Files for making an arcade stick.
+
+These files are suitable for previewing and rendering in OpenSCAD.
+
+## Attribution
+
+Inspired by the incredible work of [TheTrain](https://github.com/TheTrainGoes) on the [OpenStickCommunity Fightstick
+Case](https://github.com/OpenStickCommunity/Hardware/tree/main/Fightstick%20Case), itself based on the incredible work
+by [Dash n'Mash](https://twitter.com/Dash_xx_Mash?s=20). Original work Copyright 2023 TheTrain, [licensed under CC BY
+4.0](https://creativecommons.org/licenses/by/4.0/).
+
+Made possible by the amazing efforts of [slagcoin](https://www.slagcoin.com/).
+
+## Author and Licensing
+
+Written by and copyright Brian S. Stephan (<bss@incorporeal.org>).
+
+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, either version 3 of the License, or (at your option) any later
+version.
+
+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/>.