gitweb: document webserver configuration for common gitweb/repo URLs.

Add a small apache configuration which shows how to use apache
to put gitweb and GIT repositories at the same URL.

Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

gitweb/README

@@ -1,12 +1,14 @@
 GIT web Interface
+=================
 
 The one working on:
   http://www.kernel.org/git/
 
 From the git version 1.4.0 gitweb is bundled with git.
 
 
-How to configure gitweb for your local system:
+How to configure gitweb for your local system
+---------------------------------------------
 
 You can specify the following configuration variables when building GIT:
  * GITWEB_SITENAME
@@ -29,6 +31,28 @@ You can specify the following configuration variables when building GIT:
    environment variable will be loaded instead of the file
    specified when gitweb.cgi was created.
 
+
+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
+    DocumentRoot /pub/git
+    RewriteEngine on
+    RewriteRule ^/(.*\.git/(?!/?(info|objects|refs)).*)?$ /cgi-bin/gitweb.cgi%{REQUEST_URI}  [L,PT]
+</VirtualHost>
+
+The above configuration expects your public repositories to live under
+/pub/git and will serve them as http://git.domain.org/dir-under-pub-git,
+both as cloneable GIT URL and as browseable gitweb interface.
+If you then start your git-daemon with --base-path=/pub/git --export-all
+then you can even use the git:// URL with exactly the same path.
+
+
+
 Originally written by:
   Kay Sievers <kay.sievers@vrfy.org>