Add screenshots.

README.md

@@ -21,3 +21,16 @@ Workbench Advanced is always available at the following address: [https://wba.ad
 ## License
 
 WBA is distributed under the GNU Affero General Public License, Version 3. If you require a commercial license, please contact s dot adaszewski at gmail dot com.
+
+## Screenshots
+
+<table>
+  <tr>
+    <td><img alt="Project Browser" src="docs/screenshot_0001.png" width="300"/></td>
+    <td><img alt="Collection Properties" src="docs/screenshot_0002.png" width="300"/></td>
+  </tr>
+  <tr>
+    <td><img alt="Collection Browser" src="docs/screenshot_0003.png" width="300"/></td>
+    <td><img alt="Workflow Launcher" src="docs/screenshot_0004.png" width="300"/></td>
+  </tr>
+</table>