2014-02-09: readme: polish

readme: polish

diff --git a/README.txt b/README.txt
--- a/README.txt
+++ b/README.txt
@@ -95,7 +95,7 @@ use "hg -v help site" to show global opt
 
 
 Customization
----------------------
+-------------
 
 To change the appearance of your site, create it once and then copy style.css and print.css from `._site/`. Adapt them and use -s path/to/your/screen.css and  -p path/to/your/print.css to use your adaptions.