Place all of your images here, if you wish to simplify their inclusion into
the presentation. This folder has been added to the \graphicspath of the
presentations, so this folder will be scanned for images, even if you only
provide the picture file name with \includegraphics{image.pdf} instead of
using a path relative to the main.tex files, as in
\includegraphics{../path/to/image.pdf}.