Various changes to polish up the project

Author: MolassesLover

README.md

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+# Molasses' UPBGE FPS Template
+[![Ko-Fi](https://img.shields.io/badge/donate-kofi-blue?style=for-the-badge&logo=ko-fi&color=E35B57&logoColor=FFFFFF&labelColor=232323)](https://ko-fi.com/molasses)
+[![Patreon](https://img.shields.io/badge/donate-patreon-blue?style=for-the-badge&logo=patreon&color=E35B57&logoColor=FFFFFF&labelColor=232323)](https://www.patreon.com/molasseslover)
+
+This is a completely free and open-source template for the
+[UPBGE](https://github.com/UPBGE/upbge) game engine, a 
+community-driven revival of the old Blender game engine 
+(BGE).
+
+![Preview](docs/img/preview.gif)
+
+# Usage
+Simply load up the [`FPS_Template.blend`](src/FPS_Template.blend) file
+it contains all the data to kickstart your first-person game. The
+**Player** and **Player Camera** objects use the logic brick system,
+you may want to check it out. Additionally, the **Player** object
+uses the **Player Movement** component.
+
+# Learning
+If you are new to the UPBGE game engine, check out the official
+UPBGE [manual](https://upbge.org/#/documentation/docs/latest/manual/index.html),
+and [documentation](https://upbge.org/#/documentation/docs/latest/api/index.html).