Note lack of maintainership.

README.md

@@ -2,9 +2,13 @@
 
 # typed-html
 
-This crate provides the `html!` macro for building HTML documents inside your
+This crate provides the `html!` macro for building fully type checked HTML documents inside your
 Rust code using roughly [JSX] compatible syntax.
 
+## Not Currently Maintained
+
+This project is not currently being maintained. If you would like to take over maintainership, please [leave an issue](https://github.com/bodil/typed-html/issues/new).
+
 ## Quick Preview
 
 ```rust