Mention release versions available via git master (small test commit)

manual/installation.tex

@@ -51,6 +51,9 @@ corresponding to the release.
 \item Untar the archive, e.g., \texttt{tar xvf qmcpack\_v1.3.tar.gz}
 \end{itemize}
 
+Releases can also be obtained from the 'master' branch of the QMCPACK
+git repository, similar to obtaining the development version (Sec. \ref{sec:obdevelopment}).
+
 \section{Obtaining the latest development version}
 \label{sec:obdevelopment}
 The most recent development version of QMCPACK can be obtained anonymously via