Added README.md

README.md

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+# Rust Music Player
+**Rust Music Player** (rmp), as the name suggests, is a music player written in rust using a terminal interface.
+
+This project is heavily inspired by [Music on Console](https://github.com/jonsafari/mocp)
+
+## Usage
+Below are some examples of commandline arguments.
+If you are using cargo, add `cargo run --` before any arguments.
+
+`rmp`
+- Run the interface with the server in the background
+
+`rmp -s`
+- Run only the server
+
+`rmp -c`
+- Run only the client
+
+`rmp -x`
+- Kill the server
+
+`rmp --help`
+- For more help
+
+## Architecture
+**rmp** uses a client/server architecture with interprocess communication. The interface is independent from the audio payback.
+
+This has several benefits:
+- You can close the interface and keep the music playing
+- Controlling the backend is easy to implement using commandline arguments, which makes scripting easier
+- The interface stays responsive
+- You can have multiple interfaces open at the same time, if needed
+
+## Requirements
+Opus decoding depends on [libopus](https://opus-codec.org/) at the moment.
+
+Using apt: `sudo apt install libopus0`
+
+## Platform compability
+Compability is tested only for linux, but all of the crates used (`rodio`, `crossterm`, `interprocess`)
+should work cross-platform.
+
+There is some platform-specific code, which is only implemented for unix-like systems at the moment. See [os_unix.rs](src/os_unix.rs) for more info.