README.md edited online with Bitbucket

Author: Alexander Winkler

README.md

@@ -51,4 +51,6 @@ following commands:
 
         $ cd doc
         $ doxygen Doxyfile
-        $ google-chrome  html/index.html
+        $ google-chrome  html/index.html
+
+- A powerpoint presentation if available in the "Downloads" section of this repository.