Change the case on the headers.

All-caps is kinda shouting.

README.md

@@ -1,10 +1,10 @@
 # irssi, http://irssi.org
 
-## INSTALLATION
+## Installation
 
 See INSTALL file.
 
-## FILES
+## Files
 
  - docs/ directory contains several documents:
     - startup-HOWTO.txt - new users should read this
@@ -15,7 +15,7 @@ See INSTALL file.
     - special_vars.txt - some predefined $variables you can use with irssi
 
 
-## ABOUT
+## About
 
 Irssi is a modular IRC client that currently has only text mode user
 interface, but 80-90% of the code isn't text mode specific, so other
@@ -24,7 +24,7 @@ specific anymore, there's already a working SILC (http://www.silcnet.org)
 module available. Support for other protocols like ICQ could be created
 some day too.
 
-## FEATURES
+## Features
 
 So what's so great about Irssi? Here's a list of some features I can
 think of currently:
@@ -98,7 +98,7 @@ think of currently:
    -topics)
 
 
-## BUGS / SUGGESTIONS
+## Bugs / Suggestions
 
 See TODO file and http://bugs.irssi.org if it is already listed in there;
 if not open a bugreport on http://bugs.irssi.org or send a mail to