added MathML 3 DTD to requirements in doc

git-svn-id: http://svn.osgeo.org/postgis/trunk@9369 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/doc/README b/doc/README
index d7df8926ea55727f61ef4bb0328d1b854d37fe80..6b468e622e3b218679f9b2c7b82147f468f226c7 100644 (file)
--- a/doc/README
+++ b/doc/README
@@ -37,6 +37,9 @@ To generate the html files:
   xsltproc                  (http://xmlsoft.org/XSLT/xsltproc2.html)
   DocBook XSL scripts
 
+To generate the comments
+  MathML 3 DTD              (http://www.w3.org/Math/DTD/)
+
 To generate the images:
   ImageMagick               (http://www.imagemagick.org/script/index.php)