Update README

README.md

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 # PackConverter
 
-[![forthebadge made-with-java](https://forthebadge.com/images/badges/made-with-java.svg)](https://java.com/)
-
 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
 [![Discord](https://img.shields.io/discord/613163671870242838.svg?color=%237289da&label=discord)](http://discord.geysermc.org/)
-[![HitCount](http://hits.dwyl.com/GeyserMC/PackConverter.svg)](http://hits.dwyl.com/GeyserMC/PackConverter)
 
 PackConverter is a library for converting Java Edition resource packs to Bedrock Edition.
 
 This is based on the Node.js module ConvertJavaTextureToBedrockApi by ozelot379. 
 
 **Please note, this project is still a work in progress and should not be used on production. Expect bugs!**
+
+**This project also does not convert custom items fully, it will only convert the textures, not any mappings.**
+
+If you are looking for a project to do so, you can take a look at [Rainbow](https://github.com/GeyserMC/Rainbow/).
+
+## Usage
+- Download Thunder, the PackConverter GUI, from the Actions tab on GitHub.
+- Double-click on the JAR file to open up the UI, then select your java pack and hit convert!
+
+## CLI Usage
+You can also use PackConverter in a CLI, by downloading Thunder (See `Usage`) then running the jar file
+with some parameters, an example can be seen below:
+
+```bash
+java -jar Thunder.jar nogui --input "C:\path\to\pack.zip"
+```
+
+You can also enable debug mode by adding `debug` as an additional argument, this also works for the GUI.
+
+## Compiling
+1. Clone the repo to your computer
+2. Run gradlew build and locate to bootstrap/build folder.