Long overdue addition of information to docs

* Add 2 FAQ entries, one concerning mod blocks, the other
    about the maps API.

  * Add note about The End and lighting strength. (Closes #1111)
    (Also, nice quads.)

docs/config.rst

@@ -442,6 +442,16 @@ values. The valid configuration keys are listed below.
         nether :ref:`rendermode<option_rendermode>`. Otherwise you'll
         just end up rendering the nether's ceiling.
 
+    .. note::
+
+        For the end, you will most likely want to turn down the strength of
+        the shadows, as you'd otherwise end up with a very dark result.
+        
+        e.g.::
+            
+            end_lighting = [Base(), EdgeLines(), Lighting(strength=0.5)]
+            end_smooth_lighting = [Base(), EdgeLines(), SmoothLighting(strength=0.5)]
+
     **Default:** ``"overworld"``
 
 .. _option_rendermode:

docs/faq.rst

@@ -8,6 +8,22 @@ Frequently Asked Questions
 General Questions
 =================
 
+Does the Overviewer work with mod blocks?
+-----------------------------------------
+
+The Overviewer will render the world, but none of the blocks added by mods
+will be visible. Currently, the blocks Overviewer supports are hardcoded, and
+because there is no official Minecraft modding API as of the time of writing,
+supporting mod blocks is not trivial.
+
+Can I view Overviewer maps without having an internet connection?
+-----------------------------------------------------------------
+
+Not at the moment. The Overviewer relies on the Google maps API to display
+maps, which your browser needs to load from Google. However, switching away
+from Google Maps is something that will most likely be looked into in the
+future.
+
 When my map expands, I see remnants of another zoom level
 ---------------------------------------------------------