Update README.md: add 'rustup update'

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Seiichi Uchida 2017-07-10 13:46:36 +09:00 committed by GitHub
parent 0a42648678
commit 8b681e06fd

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@ -21,7 +21,7 @@ to be a bit out of date).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
```