Update README

Author: fwcd

README.md

@@ -6,6 +6,6 @@ Unofficial prebuilt Arch Linux ARM images for several architectures and flavors,
 
 - Automatic file system expansion on first boot
 - Preinstallation of `linux-rpi` and `raspberrypi-bootloader`
-- Optional preinstallation of `avahi` (mDNS/DNS-SD) for easy discovery
+- Optional preinstallation of `avahi` (mDNS/DNS-SD) and other tools
 
-These scripts based on the fantastic work by [andrewboring](https://github.com/andrewboring/alarm-images) and [disconnected.systems](https://disconnected.systems/blog/custom-rpi-image-with-github-travis/#first-stage-script-create-image) on making Arch Linux ARM builds in CI.
+These scripts are based on the fantastic work by [andrewboring](https://github.com/andrewboring/alarm-images) and [disconnected.systems](https://disconnected.systems/blog/custom-rpi-image-with-github-travis/#first-stage-script-create-image) on making Arch Linux ARM builds in CI.