Adds Télécom ParisTech logo in the letters watermark

lettre-upsay.tex

@@ -26,7 +26,7 @@
 % watermark (e logo in the right corner) using the background package
 \usepackage{background}
 \backgroundsetup{%
-   contents={\includegraphics[width=2cm]{logo-upsay-e}},
+   contents={\includegraphics[width=1cm]{tpt}\hspace{.5cm}\includegraphics[width=1.5cm]{logo-upsay-e}},
    placement=bottom,
    position=current page.south east,
    hshift=-2cm,