Fix links

README.md

@@ -1,6 +1,6 @@
 
 This is an online map of Middle Earth.  The front-end is entirely static on
-[http://3rin.gs/](3rin.gs) posted from the www/ directory.  Most of the  static
+[http://3rin.gs/](http://3rin.gs) posted from the www/ directory.  Most of the  static
 content is generated from spreadsheets, hand drawn graphics, SVG layouts, and
 assembled and processed with a variety of tools.
 
@@ -19,16 +19,16 @@ It is dangerous to go alone.  Take these!
     apt-get install inkscape gimp python-imaging python-numpy
 
 The large graphical content is not in the git repository.  These can be
-downloaded from http://3rin.gs.
+downloaded from [http://3rin.gs](http://3rin.gs).
 
     make archive/components
 
-[http://3rin.gs/components.zip]() contains all of the manually
+[http://3rin.gs/components.zip](http://3rin.gs/components.zip) contains all of the manually
 constructed bitmap components for the geography and label layers.
 
     make archive/sources
 
-[http://3rin.gs/sources.zip]() contains all of the original scanes
+[http://3rin.gs/sources.zip](http://3rin.gs/sources.zip) contains all of the original scanes
 from which the components were manually constructed.  these graphics
 are not necessary for generating the site.  they exist if any of the
 components need to be reconstructed from source material, or for new