\documentclass[a4paper]
\newcommand{\a}{https://github.com/scozv/algo-js}

\begin{document}
\author{@scozv}
\date{May, 07, 2016}
\maketitle




I read and code \footnote{\a{}}   ::
I \LaTeX{}                        ::
I <React />                       ::
and                               ::
I am Play!ing with Scala.         :: Nil mkString ",\r\n"





\end{document}