Screenshots back in Markdown.

README.md

@@ -24,13 +24,10 @@ WBA is distributed under the GNU Affero General Public License, Version 3. If yo
 
 ## 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>
+![Project Browser](docs/screenshot_0001.png)
+
+![Collection Properties](docs/screenshot_0002.png)
+
+![Collection Browser](docs/screenshot_0003.png)
+
+![Workflow Launcher](docs/screenshot_0004.png)