[WIP] Revamp README.md

Author: pynicolas

README.md

@@ -13,11 +13,9 @@ FairScan is an Android app to scan documents. It aims to be simple and respectfu
 - Website: [fairscan.org](https://fairscan.org)
 
 ## Screenshots
-<p>
-  <img src="screenshots/step-1.webp" width="30%">
-  <img src="screenshots/step-2.webp" width="30%">
-  <img src="screenshots/step-3.webp" width="30%">
-</p>
+| ![](screenshots/step-1.webp) | ![](screenshots/step-2.webp) | ![](screenshots/step-3.webp) |
+|------------------------------|------------------------------|------------------------------|
+| 1. Scan                      | 2. Preview                   | 3. Save & Share              |
 
 ## Features