gitweb setup instruction: rewrite HEAD and root as well

Also add a few more hints for how to setup and configure gitweb as described

[jc: with a fix from Mike Hommey]

Signed-off-by: Junio C Hamano <gitster@pobox.com>

gitweb/README

@@ -255,12 +255,15 @@ Webserver configuration
 If you want to have one URL for both gitweb and your http://
 repositories, you can configure apache like this:
 
-<VirtualHost www:80>
-    ServerName git.domain.org
+<VirtualHost *:80>
+    ServerName git.example.org
     DocumentRoot /pub/git
-    RewriteEngine on
-    RewriteRule ^/(.*\.git/(?!/?(info|objects|refs)).*)?$ /cgi-bin/gitweb.cgi%{REQUEST_URI}  [L,PT]
     SetEnv	GITWEB_CONFIG	/etc/gitweb.conf
+    RewriteEngine on
+    # make the front page an internal rewrite to the gitweb script
+    RewriteRule ^/$  /cgi-bin/gitweb.cgi
+    # make access for "dumb clients" work
+    RewriteRule ^/(.*\.git/(?!/?(HEAD|info|objects|refs)).*)?$ /cgi-bin/gitweb.cgi%{REQUEST_URI}  [L,PT]
 </VirtualHost>
 
 The above configuration expects your public repositories to live under
@@ -276,6 +279,13 @@ override the defaults given at the head of the gitweb.perl (or
 gitweb.cgi).  Look at the comments in that file for information on
 which variables and what they mean.
 
+If you use the rewrite rules from the example you'll likely also need
+something like the following in your gitweb.conf (or gitweb_config.perl) file:
+
+  @stylesheets = ("/some/absolute/path/gitweb.css");
+  $my_uri = "/";
+  $home_link = "/";
+
 
 Originally written by:
   Kay Sievers <kay.sievers@vrfy.org>