\usepackage{inconsolata}
%\usepackage{multicol}
\usepackage{array}
+\usepackage{cclicenses}
\usepackage{tikz}
\usetikzlibrary{arrows}
\usetikzlibrary{arrows}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
+\begin{center}
\vfill
-\centering\LARGE{Questions?}
+\LARGE{Questions?}
\vfill
+\vfill
+\footnotesize
+\cc\bysa\\
+This presentation is licensed under the terms of the \\
+Creative Commons Attribution-ShareAlike 3.0 Unported license\\
+and builds on public domain icons from the Tango Desktop Project
+\end{center}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%