gitweb: Add example of config file and how to generate projects list to gitweb/INSTALL
gitweb: Add example of config file and how to generate projects list to gitweb/INSTALL

Add simple example of config file (turning on and allowing override of
a few %features). Also example config file and script to generate list
of projects in a format that can be used as GITWEB_LIST / $projects_list.

Signed-off-by: Jakub Narebski <a6a1517a087f9f64a72f41a0de57ff01fbb0e412@gmail.com>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git