Add more fields to Cargo.toml.

Author: ctamblyn

Cargo.toml

@@ -5,5 +5,9 @@ authors = ["Christian Tamblyn <[email protected]>"]
 edition = "2018"
 description = "A simple crate which allows iteration over the set bits in an integral value."
 license = "MIT"
+documentation = "https://docs.rs/bit-iter"
+repository = "https://github.com/ctamblyn/bit-iter"
+keywords = ["bits", "iterator", "bit-twiddling"]
+categories = ["algorithms"]
 
 [dependencies]