Add recently added snapshot-checkout feature to the list of features in the documentation.

svn path=/trunk/KDE/kdesdk/doc/scripts/kdesvn-build/; revision=504014

doc/index.docbook

@@ -591,6 +591,17 @@ Supports <link linkend="changing-verbosity">output message levels</link>
 ranging from being very quiet to a full debug level.
 </para></listitem>
 
+<listitem><para>
+&kdesvn-build; can, with the assistance of the <ulink url="http://kdesvn-build.kde.org/">kdesvn-build website</ulink>,
+allow for speedy checkouts of some modules.  If the module you are checking out
+has already been packaged at the website, then kdesvn-build will download the
+snapshot and prepare it for use on your computer.
+</para>
+
+<para>This is faster for you, and helps to ease the load on the kde.org
+anonymous Subversion servers.</para>
+</listitem>
+
 <listitem><para>
 Has excellent support for the <link linkend="using-qt-copy">qt-copy module</link>,
 including optionally applying bugfix and optimization patches to the qt-copy