chore: add readme

Author: mworzala

README.md

@@ -1,3 +1,32 @@
-# schem
+# Schem
 
-todo write me
+[![license](https://img.shields.io/github/license/Minestom/MinestomDataGenerator.svg)](LICENSE)
+
+A schematic reader and writer library for Minestom. The library can read Sponge schematics versions 1-3, currently
+it always writes as Sponge schematics version 1.
+
+## Install
+
+Schem is available on [maven central](https://search.maven.org/search?q=g:dev.hollowcube%20AND%20a:schem).
+
+```groovy
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'dev.hollowcube:schem:<see releases>'
+}
+```
+
+## Usage
+
+todo add me
+
+## Contributing
+
+Contributions via PRs and issues are always welcome.
+
+## License
+
+This project is licensed under the [MIT License](LICENSE).