Update README.md: add 'rustup update'
@@ -21,7 +21,7 @@ to be a bit out of date). Version 0.1 of rustfmt-nightly is forked from version
## Quick start
-You must be using a nightly compiler toolchain.
+You must be using the latest nightly compiler toolchain.
To install:
@@ -44,6 +44,7 @@ cargo install rustfmt-nightly
or if you're using [Rustup](https://www.rustup.rs/)
```
+rustup update
rustup run nightly cargo install rustfmt-nightly
```
