Add a README

Cargo.toml

@@ -1,10 +1,11 @@
 [package]
 name = "type-uuid"
 version = "0.1.0"
-authors = ["Jacob Kiesel <kieseljake@gmail.com>", "David LeGare <dlegare.1001@gmail.com>"]
+authors = ["David LeGare <dlegare.1001@gmail.com>", "Jacob Kiesel <kieseljake@gmail.com>"]
 edition = "2018"
 
 description = "Safe, stable IDs for Rust types"
+readme = "./README.md"
 documentation = "https://docs.rs/type-uuid"
 repository = "https://github.com/randomPoison/type-uuid"
 license = "Apache-2.0 OR MIT"

README.md

@@ -1 +1,28 @@
 # type-uuid
+
+This crate provides a way to specify a stable, unique identifier for Rust types.
+
+## Assigning UUIDs to Types
+
+This crate provides the [`TypeUuid`] trait, which defines a single const item
+`UUID`. This value is a byte array containing the raw bytes of the UUID for the
+type.
+
+You will have to manually specify the UUID for any type implementing
+[`TypeUuid`], but this crate provides a custom derive to make that easy to do:
+
+```rust
+use type_uuid::TypeUuid;
+
+#[derive(TypeUuid)]
+#[uuid = "d4adfc76-f5f4-40b0-8e28-8a51a12f5e46"]
+struct MyType;
+```
+
+While the derive handles the tedious work of converting the UUID into a byte
+array suitable for use with the [`TypeUuid`] trait, you'll still need to
+generate a valid UUID in order to assign it to your type. To do so, we
+recommend using https://www.uuidgenerator.net, which provides a quick way
+generate new UUIDs that you can paste into your code.
+
+[`TypeUuid`]: ./trait.TypeUuid.html