Added more images; converted list to a table; minor other changes

presentations/Bachelor-Short/LaTeX/introduction.tex

@@ -24,6 +24,7 @@
     %     \item and provide data and a platform to test new ideas for classifiers
     % \end{itemize}
 
-    As soon as symbol recognition works good in terms of classification time and
-    performance, I will continue with formula recognition.
+    For now: recognition of isolated symbols. That means:
+
+    single symbol \enquote{formulae} rather than multi symbol formulae
 \end{frame}