[Sonstiges] Updated ue4sim presentation with paper slide

Signed-off-by: Jim Martens <github@2martens.de>

sonstiges/tex/ue4sim.tex

@@ -73,6 +73,13 @@
     \titlepage
 \end{frame}
 
+\begin{frame}{Paper}
+    \centering
+    M. Mueller, V. Casser, J. Lahoud, N. Smith und B. Ghanem,
+    „UE4Sim: A Photo-Realistic Simulator for Computer Vision Applications“,
+    2017. arXiv: 1708.05869. Adresse: https://arxiv.org/abs/1708.05869
+\end{frame}
+
 \begin{frame}{Problem}
     \begin{itemize}
         \item enough realistic training data is hard to come by