docs: flesh out gst-uninstalled entry in faq some more

https://bugzilla.gnome.org/show_bug.cgi?id=709916

docs/faq/developing.xml

@@ -44,22 +44,27 @@ or integrate with autoconf using the pkg.m4 macro (providing PKG_CONFIG_CHECK).
       <answer>
         <para>
 It is possible to develop and compile against an uninstalled copy of
-gstreamer and gst-plugins-* (for example, against gits checkouts).
-
+gstreamer and gst-plugins-* (for example, against git checkouts). This
+allows you to develop against and test the latest GStreamer version
+without having to install it and without interfering with your system-wide
+GStreamer setup.
+        </para>
+        <para>
 The easiest way too create such a setup is the
 <ulink url="http://cgit.freedesktop.org/gstreamer/gstreamer/tree/scripts/create-uninstalled-setup.sh">latest version of create-uninstalled-setup.sh</ulink>
-	</para>
-	<para>
+        </para>
+        <para>
 This setup makes use of the
 <ulink url="http://cgit.freedesktop.org/gstreamer/gstreamer/tree/scripts/gst-uninstalled">latest version of gst-uninstalled</ulink>.
 Running this script, you'll be in an environment where the uninstalled
 tools and plugins will be used by default.  Also, pkg-config will detect the
 uninstalled copies before (and prefer them to) any installed copies.
         </para>
-	<para>
+        <para>
 Multiple uninstalled setups can be used in parallel. Have a look at
-<ulink url="http://cgit.freedesktop.org/gstreamer/gstreamer/tree/scripts/gst-uninstalled">gst-uninstalled</ulink> to see how it determines which environment is used.
-	</para>
+<ulink url="http://cgit.freedesktop.org/gstreamer/gstreamer/tree/scripts/gst-uninstalled">gst-uninstalled</ulink>
+to see how it determines which environment is used.
+        </para>
       </answer>
     </qandaentry>