Write a proper README.md

README.md

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 # ELApse
+
+ELApse is a tool used for processing and displaying the .ELA format from a dead rhythm game 
+
+## Downloading
+
+You can either download the latest release from the [releases](https://github.com/BlackDragon-B/ELApse/releases) or build it yourself using cargo
+## Usage
+
+```bash
+ELApse --input <INPUT> --output <OUTPUT>
+
+Options:
+  -i, --input <INPUT>    Input to use
+  -o, --output <OUTPUT>  Output to use
+  -h, --help             Print help
+  -V, --version          Print version
+```
+## Features
+### Input
+- [WARLS](https://github.com/Aircoookie/WLED/wiki/UDP-Realtime-Control) (--input udp://0.0.0.0:21324)
+- Images (--input example.png)
+- .uasset/.uexp (--input ELA_BP_Title_in_00.uasset)
+- File containing raw rgb8 (--input file)
+- Raw rgb8 from stdin (--input stdin)
+### Output
+- [WARLS](https://github.com/Aircoookie/WLED/wiki/UDP-Realtime-Control) (--output udp://0.0.0.0:21324)
+- Built-in renderer built with [Piston](https://www.piston.rs/) (--output piston)
+## Contributing
+
+Feel free to open an issue if you think this tool is missing something critical. Pull requests are always welcome.
+
+## License
+
+ELApse is licensed under the  [GPLv3](https://choosealicense.com/licenses/gpl-3.0/) license.