\usepackage{graphicx}
\usepackage{float}
\usepackage{tabularx}
+%fancy checkmarks in table for testing
+\usepackage{amssymb}% http://ctan.org/pkg/amssymb
+\usepackage{pifont}% http://ctan.org/pkg/pifont
+\newcommand{\cmark}{\ding{51}}%
+\newcommand{\xmark}{\ding{55}}%
\lstset{%
basicstyle=\footnotesize, % the size of the fonts that are used for the code