\documentclass[a4paper,11pt]{article}
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\usepackage[english]{babel}
\selectlanguage{english}

\usepackage[colorlinks=true, citecolor=blue, 
  linkcolor=blue, urlcolor=blue,
  bookmarksopen=false, pdfpagemode=UseOutlines]{hyperref}

\usepackage{Sweave}

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\newcommand{\email}[1]{\href{mailto:#1}{\normalfont\texttt{#1}}}

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\title{\textsf{R} Package \textsf{tsdecomp}}
\author{Javier L\'opez-de-Lacalle \\ \email{javlacalle@yahoo.es}}
\date{December 2016}

\begin{document}

%\VignetteIndexEntry{tsdecomp-intro}
%\VignetteKeyword{arima}
%\VignetteKeyword{decomposition}
%\VignetteKeyword{time series}
%\VignetteDepends{tsdecomp}

\maketitle

\thispagestyle{empty}

In order to reduce the size of the package and the time required for checking it, 
the real vignette is placed outside the source files. 
The vignette is available in the link below (or upon request from the author):

\begin{center}
\href{https://www.jalobe.com/doc/tsdecomp.pdf}{https://www.jalobe.com/doc/tsdecomp.pdf}.
\end{center}

The above vignette is likely to be updated independently of the updates of 
the package (this is another reason to keep the vignette outside the 
sources of the package).

\end{document}