README: Add Arch Linux install instructions

tsenart · tsenart · commit 3e67d019e620 · 2023-07-14T19:45:11.000+02:00
diff --git a/README.md b/README.md
@@ -26,6 +26,12 @@ Or with [MacPorts](https://www.macports.org/):
 $ port install vegeta
 ```
 
+### Arch Linux
+
+```shell
+$ pacman -S vegeta
+```
+
 ### FreeBSD
 
 On FreeBSD you can install Vegeta with the built in package manager because there is a [Vegeta Package](https://www.freshports.org/benchmarks/vegeta) available.
