Guide: Add a note about packing landscapes.

guide/ch_introduction.tex

@@ -115,6 +115,7 @@ \section{Historical notes}
 \item[2017-06] v0.16.0: Remote Sync plugin, polygonal OBJ models for minor bodies, RTS2 telescope support
 \item[2017-09] v0.16.1: Standard and extended DSO catalog, new subcatalogues for DSO
 \item[2017-12] v0.17.0: Nomenclature labels for planets and moons, INDI telescope support
+\item[2018-03] v0.18.0: Multiple image surveys
 \end{description}
 
 Stellarium has been kindly supported by ESA in their Summer of Code in
@@ -128,9 +129,8 @@ \section{Historical notes}
 This guide is based on the user guide written by Matthew Gates for
 version 0.10 around 2008. The guide was then ported to the Stellarium
 wiki and continuously updated by Barry Gerdes and Alexander Wolf up to version 0.12. 
-
-The user documentation has been developed further on the Stellarium
-wiki for some time, but without Barry started to fall out of sync with
+Unfortunately, some new features were not properly documented in the wiki, and generally, 
+without Barry the wiki started to fall out of sync with
 the actual program.  In late 2015 we (Alexander and Georg) started porting the texts
 back to \LaTeX{} and updated and added information where necessary, 
 or wrote new chapters for the features which were introduced in the last years. 

guide/ch_landscapes_gz.tex

@@ -672,6 +672,17 @@ \subsection{Gazetteer}
 135       | 2        |     0.5        |    0    | Wind power plant Strasshof
 \end{configfileScr}
 
+\subsection{Packing and Publishing}
+\label{sec:landscapes:Packing}
+
+You likely have developed your landscape already in your own Stellarium user data directory, but when you are happy with your work, 
+you may consider sharing it with other users.
+For easy distribution and installation via Stellarium's GUI (see section~\ref{sec:gui:view:landscape}), you should create a ZIP file.
+This must contain \file{landscape.ini} and any textures and auxiliary files described above (\file{description.en.utf8}, \file{gazetteer.en.utf8} 
+and their translations, horizon files, images for the description  \ldots) used by your landscape. 
+If you want to release the landscape for download, consider adding a \file{README.txt} clarifying license and usage conditions.
+It does not matter whether the ZIP file contains a directory name inside the ZIP. If not, the directory name (ID) of the 
+landscape will be taken from the ZIP file name.
 
 \newpage