docs: add disclaimer header to top of README (#171)

README.md

@@ -4,6 +4,13 @@
 </div>
 
 ## A VIM-Like editor for your terminal (<a href="https://discord.gg/N4UG2TfDfd">chat on Discord</a>)
+
+> [!IMPORTANT]
+> Lilly is in a pre-alpha state, and only suitable for use by developers.
+> This editor is technically usable, it is the exclusive editor used to work on itself,
+> however many features are missing, and there is no guarantee of stable features or a lack of bugs.
+> Features, bug fixes and issues are welcome.
+
 ![Screenshot 2023-11-17 20 07 13](https://github.com/tauraamui/lilly/assets/3159648/12e893ce-0120-4eb4-9d54-71b1a076832c)
 
 ![Screenshot 2023-12-01 21 01 45](https://github.com/tauraamui/lilly/assets/3159648/e9023db2-0214-49e1-baad-9a75aa22d291)