Merge #113

113: Update README.md about installation from the AUR r=foresterre a=orhun

Hello!

I created the following AUR package (actually I've been maintaining it for a while):

- [cargo-msrv](https://aur.archlinux.org/packages/cargo-msrv/)

This PR basically updates README.md to mention the installation instruction on Arch Linux for this package.



Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>

README.md

@@ -13,6 +13,9 @@ With Cargo from Github [latest development version]:
 
 `cargo install cargo-msrv --git https://github.com/foresterre/cargo-msrv.git --branch main`
 
+From the [AUR](https://aur.archlinux.org/packages/cargo-msrv/) (Arch Linux):
+
+`paru -S cargo-msrv`
 
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