Add comment about support to readme

README.md

@@ -8,6 +8,8 @@
 
 This repository contains implementations of [spark](https://github.com/lucko/spark) for additional platforms.
 
+These releases do not receive the same level of support as the main spark plugins/mods. They are provided as-is, and may be out of date or contain bugs. If you run into problems, please open an issue on GitHub and/or raise a pull request to fix!
+
 #### Useful Links
 * [**Website**](https://spark.lucko.me/) - browse the project homepage
 * [**Documentation**](https://spark.lucko.me/docs) - read documentation and usage guides