Update README.md

Author: nikomatsakis

README.md

@@ -1,2 +1,10 @@
 # project-rfc-2229
-A repository tracking the planning for implementation and evaluation of RFC 2229.
+
+A repository tracking the planning for implementation and evaluation of [RFC 2229].
+
+See also:
+
+* [RFC 2229]
+* [Rust tracking issue, rust-lang/rust#53488](https://github.com/rust-lang/rust/issues/53488)
+
+[RFC 2229]: https://github.com/rust-lang/rfcs/blob/master/text/2229-capture-disjoint-fields.md