Add null domain source.

* Makefile.PL: Lower some prerequisite requirements.
* acmeman: Document the null source.
* lib/App/Acmeman/Source/Null.pm: New file.

1 files changed, 11 insertions, 6 deletions

diff --git a/acmeman b/acmeman
index 932b5c5..99f158a 100755
--- a/acmeman
+++ b/acmeman
@@ -210,12 +210,17 @@ same order as they appeared in the configuration file.
 
 =item B<source=>I<ID> [I<LAYOUT>]
 
-Defines additional source of information. As of B<acmeman> version 2.00,
-only one I<ID> is supported: B<apache>. This source module scans apache
-configuration files as described in section B<APACHE>. The optional
-I<LAYOUT> argument defines the apache configuration layout. Allowed values
-are: B<debian>, B<slackware>, B<suse> and B<rh> (for Red Hat). If I<LAYOUT>
-is absent, it will be autodetected.
+Defines additional source of information. B<App::Acmeman> version 1.05
+is shipped with two sources: B<null> and B<apache>. 
+
+The B<null> module is an empty source. Use it if all domains are described
+in the configuration file.
+
+The B<apache> source module is the default. It scans B<httpd> configuration
+files as described in section B<APACHE>. The optional I<LAYOUT> argument
+defines the apache configuration layout. Allowed values are: B<debian>,
+B<slackware>, B<suse> and B<rh> (for Red Hat). If I<LAYOUT> is absent, it
+will be autodetected.
 
 =item B<files=>I<NAME>