Add --help and --version to Getting Started.

Author: Elemecca

section-gettingstarted.tex

@@ -411,6 +411,17 @@ \section{Running ngscopeclient}
 \label{empty-window}
 \end{figure}
 
+\subsection{General arguments}
+\begin{itemize}
+
+\item \texttt{-{}-version}\\
+Print the application version and exit.
+
+\item \texttt{-{}-help}, \texttt{-h}\\
+Print a brief description of the available command line arguments and exit.
+
+\end{itemize}
+
 % TODO: add this section once these are implemented
 \begin{comment}