Update README.md

Author: pbatard

README.md

@@ -1,5 +1,5 @@
-Fido: Full ISO Download Script (for Windows retail ISOs)
-========================================================
+Fido: A PowerShell download script for Windows ISOs and UEFI Shell
+==================================================================
 
 [![Licence](https://img.shields.io/badge/license-GPLv3-blue.svg?style=flat-square)](https://www.gnu.org/licenses/gpl-3.0.en.html)
 [![Github stats](https://img.shields.io/github/downloads/pbatard/Fido/total.svg?style=flat-square)](https://github.com/pbatard/Fido/releases)
@@ -9,7 +9,7 @@ Description
 
 Fido is a PowerShell script that is primarily designed to be used in [Rufus](https://github.com/pbatard/rufus), but that
 can also be used in standalone fashion, and whose purpose is to automate access to the official Microsoft Windows retail
-ISO download links.
+ISO download links as well as provide convenient access to bootable UEFI Shell images.
 
 This script exists because, while Microsoft does make retail ISO download links freely and publicly available (at least
 for Windows 8 and Windows 10), it only does so after actively forcing users to jump through a lot of unwarranted hoops,