add history screenshot

README.md

@@ -64,3 +64,10 @@ All original code is licensed under the [MPL 2.0](https://www.mozilla.org/MPL/2.
 - [sti](https://github.com/karai17/Simple-Tiled-Implementation): [MIT](http://opensource.org/licenses/mit-license.php)
 
 The tiles and character images are from the [liberated pixel cup](http://lpc.opengameart.org/) and are under a [cc-by.sa 3.0](http://creativecommons.org/licenses/by-sa/3.0/) license.
+
+# History
+I started a first version of this in ~2008 with the [RPG Maker](http://www.rpgmakerweb.com/) (no idea which version), back when I had even less an idea of software development than today :)
+
+The only thing surviving is the following sscreenshot:
+
+![history](history.png)