\documentclass{standalone}

\usepackage{pgfplots}

\pgfplotsset{compat=1.9}

% \usetikzlibrary{}
% \usepgfplotslibrary{}

\usepackage{pgfplotstable}
\usepackage{booktabs}
\usepackage{array}
\usepackage{colortbl}

\begin{document}

\begin{tikzpicture}
	\begin{axis}[axis lines=center,
		extra x ticks={0},
		extra y ticks={0},
		]
	\addplot+[samples=2] {x};
	\end{axis}
\end{tikzpicture}
\end{document}

