added W8SP club logo

added W8SP club logo

backside.tex

@@ -1,6 +1,7 @@
 \documentclass{article}
 \usepackage{multirow,tabularx}
 \usepackage{amsmath}
+\usepackage{graphicx}
 \usepackage{amssymb}
 \pagestyle{empty}
 \setlength\parindent{0pt}
@@ -33,5 +34,6 @@
 \end{tabular} 
 \end{center}
 \vfill
+\hspace{5pt}\includegraphics[scale=0.2]{w8sp.png}\\
 {\small *the front of this QSL card is unique to your callsign -- see the webpage \\ \texttt{https://github.com/tomcuchta/hypergeometricqsl} for an explanation!}
 \end{document}