Update README.md

Author: cozyGalvinism

README.md

@@ -8,7 +8,7 @@ The project is still at its early stages and will undergo drastic changes.
 
 ## Project structure
 
-metamc is split into 2 parts.
+metamc is split into 2 parts, both of which are written in Rust.
 
 ### libmcmeta
 
@@ -23,6 +23,29 @@ modloader installers) and then either serving these metadata files or
 generating them for usage somewhere else (like GitHub Pages). It is licensed
 under GPL-3.0-only.
 
+#### How to run this
+
+Since no binaries are released yet, you will have to clone and compile this
+repository yourself. Make sure you have Rust installed and then run:
+
+```sh
+git clone https://github.com/PrismLauncher/mcmeta.git
+cd mcmeta/mcmeta
+
+export RUST_LOG=INFO
+export MCMETA_BIND_ADDRESS=127.0.0.1:9988
+export MCMETA_META_DIRECTORY=../meta
+cargo run
+```
+
+#### Endpoints
+
+The following endpoints are currently implemented:
+
+- `GET /raw/mojang` for the Mojang version manifest, which contains all
+versions
+- `GET /raw/mojang/:version` for a specific Minecraft version, if it exists
+
 ## Goals
 
 Eventually, mcmeta should implement at least the following goals: