change: Add notice to gipc about instability

README.md

@@ -2,6 +2,11 @@
 
 **General Interprocess Communication** (or _gipc_, pronounced like gypsy /ʤɪ́psɪ/) is a library that abstracts away common things in interprocess communication to speed up development and reduce errors.
 
+> NOTE: 
+> 
+> gipc is not entirely stable yet - there are still a few wrinkles to iron out.
+> Whilst it is production-ready, the API may be subject to change.
+
 ## Usage
 
 To get a sense of how to use gipc, please read the [examples](./examples); these show roughly how the code would look in an application, alongside explanations of why everything happens in the order that it does.