Update README.md

Author: Wyvest

README.md

@@ -1,2 +1,8 @@
 # OneConfigExampleMod
 Example mod implementing OneConfig.
+
+## How to use
+
+- Copy the template either by using GitHub's "Use this template" feature or downloading the repo manually.
+- **Remove the license named "LICENSE-TEMPLATE" and choose a new one.**
+- Refactor the template (specifically, the modid, version and name in the gradle.properties and most of the class names) to a different name.