Fill out crate metadata

Cargo.toml

@@ -1,15 +1,22 @@
 [package]
 name = "hecs"
 version = "0.1.0"
+description = "A fast, minimal, and ergonomic entity-component-system"
 authors = ["Benjamin Saunders <[email protected]>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
+readme = "README.md"
+keywords = ["ecs", "entity"]
+categories = ["data-structures", "game-engines"]
+
+[badges]
+maintenance = { status = "actively-developed" }
 
 [package.metadata.docs.rs]
 all-features = true
 
 [features]
-# Enables derive(Bundle)
+# Enables derive(Bundle) and derive(Query)
 macros = ["hecs-macros", "once_cell"]
 
 [dependencies]

README.md

@@ -0,0 +1,11 @@
+# hecs
+
+[![Documentation](https://docs.rs/hecs/badge.svg)](https://docs.rs/hecs/)
+[![Crates.io](https://img.shields.io/crates/v/hecs.svg)](https://crates.io/crates/hecs)
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE-MIT)
+[![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE-APACHE)
+
+hecs provides a high-performance, minimalist entity-component-system (ECS)
+world. It is a library, not a framework. In place of an explicit "System"
+abstraction, a `World`'s entities are easily queried from regular code. Organize
+your application however you like!

macros/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "hecs-macros"
 version = "0.1.0"
+description = "Procedural macro definitions for hecs"
 authors = ["Benjamin Saunders <[email protected]>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"