Add link to README in manifest

Author: mbrubeck

Cargo.toml

@@ -1,10 +1,11 @@
 [package]
 name = "new-ordered-float"
-version = "1.0.0"
+version = "1.0.1"
 authors = ["Jonathan Reem <jonathan.reem@gmail.com>", "Matt Brubeck <mbrubeck@limpet.net>"]
 license = "MIT"
 description = "Wrappers for total ordering on floats (fork of ordered-float)"
 repository = "https://github.com/mbrubeck/rust-ordered-float"
+readme = "README.md"
 
 [lib]
 name = "ordered_float"