Mention #[derive] expansion in readme

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David Tolnay 2016-06-09 00:25:42 -07:00
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[![Latest Version](https://img.shields.io/crates/v/cargo-expand.svg)](https://crates.io/crates/cargo-expand)
This is a wrapper around `cargo rustc -- --pretty=expanded`. Once installed, the
command `cargo expand` prints out the result of macro expansion applied to the
current crate.
command `cargo expand` prints out the result of macro expansion and `#[derive]`
expansion applied to the current crate.
## Installation