\documentclass[11pt,a4paper]{report}
\usepackage[francais]{babel}
\usepackage[latin1]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage[usenames,dvipsnames]{pstricks}
\usepackage{epsfig}
\usepackage{pst-grad} % For gradients
\usepackage{pst-plot} % For axes
\author{Guillaume \textsc{Abramovici}\\
		Guy \textsc{Godfroy}\\
		Mickaël \textsc{Illy}\\
		Quentin \textsc{Martin}\\
		\\
		\textit{Encadrant :} Elizabeth \textsc{Brunnet}}
\title{Projet \textsc{PonyTracker}\\
		Livrable 1 : Cahier des charges}

\begin{document}
\maketitle
\end{document}