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

\begin{document}
\author{Scott}
\date{March, 12, 2016}
\maketitle




I read, I code \footnote{\a{}},
I \LaTeX{}, I <React />,
and I am Play!ing with Scala.




\end{document}