docs: add notice regarding dynamic containers

Author: scriptcoded

README.md

@@ -4,6 +4,14 @@ In a project of mine I had to fit some text of unknown length to a container
 without it wrapping. This utility component does exactly that, regardless of
 whether if it sits inline, in a flexbox, grid or table. It just works.
 
+> [!IMPORTANT]
+> 
+> At the moment the fitter can have some issues adjusting to containers that
+> resize based on their content. A feeback loop occurs where the fitter never
+> settles because the size changes with every change in font size. I have some
+> ideas on how to fix this but haven't tried implemented any them yet. If this
+> is an issue for your use case, please don't hesitate to open an issue.
+
 ```bash
 npm install react-fitter
 ```