Update README.md

@binyamin Fixes #96

README.md

@@ -76,7 +76,7 @@ Repo mirrors:
 - [Lagrange](https://git.skyjake.fi/skyjake/lagrange) (C) - desktop GUI client with inline image viewing, multiple tabs, bookmarks and more.
 - [Moonlander](https://sr.ht/~admicos/moonlander/) (Rust) - the fanciest Gemini client in the entire solar system.
 - [Kristall](https://github.com/MasterQ32/kristall) (C++) - graphical Gopher and Gemini client using QT.
-- [spacewar](https://github.com/ResonAtom/spacewar) (Electron.js) - Gemini browser running on Electron.
+- [spacewar](https://github.com/ResonAtom/spacewar) (Electron.js) - EXPERIMENTAL and UNSTABLE Gemini browser running on Electron.
 
 #### Mobile
 - [Ariane](https://oppen.digital/software/ariane/) (Kotlin/Java) - Gemini protocol client for Android based OS.