added more sections

package/mtheme.dtx

@@ -66,6 +66,7 @@
   morekeywords={usetheme,institute,maketitle,mthemetitleformat,plain,setbeamercolor},
 }
 \lstMakeShortInline|
+
 \usepackage[colorlinks=true,
             linkcolor=mLightBrown,
             menucolor=mLightBrown,
@@ -109,6 +110,14 @@ To get started with the theme is very simple. The following code shows a minimal
 \end{document}
 \end{lstlisting}
 
+\section{Known Issues}
+
+\section{Changelog}
+
+\section{License}
+
+The theme itself is licensed under a \href{http://creativecommons.org/licenses/by-sa/4.0/}{Creative Commons Attribution-ShareAlike 4.0 International License}. This means that if you change the theme and re-distribute it, you must retain the copyright notice header and license it under the same CC-BY-SA license. This does not affect the presentation that you create with the theme.
+
 \section{Implementation}
 \DocInput{beamerthemem.dtx}
 \DocInput{beamerfontthememetropolis.dtx}