Tobias outlined a rare situation where a site admin may not have an

admin account, and will therefore need to do things in .htconfig.php

So, restore the .htconfig.php method as "If you prefer..."

twitter/README

@@ -48,7 +48,8 @@ ___ Configuration ___
 __ Global Configuration __
 
 If you enabled an administrator account, please use the admin panel to cofigure
-the Twitter relay.
+the Twitter relay.  If you for any reason prefer to use a configuration file instead 
+of the admin panels, please refer to the Alternative Configuration below. 
 
 Activate the plugin from the plugins section of your admin panel.  When you have
 done so, add your consumer key and consumer secret in the settings section of the 
@@ -58,6 +59,20 @@ When this is done your user can now configure their Twitter connection at
 "Settings -> Plugin Settings" and enable the forwarding of their *public*
 messages to Twitter.
 
+__ Alternative Configuration __
+
+-To activate this addon add @twitter@ to the list of active addons in your
+.htconfig.php file 
+
+$a->config['system']['addon'] = "twitter, ..."
+
+Afterwards you need to add your OAuth consumer key / secret pair to it by
+adding the following two lines
+
+$a->config['twitter']['consumerkey'] = 'your consumer KEY here';
+$a->config['twitter']['consumersecret'] = 'your consumer SECRET here';
+
+
 __ User Configuration __
 
 When the OAuth consumer informations are correctly placed into the
@@ -73,3 +88,4 @@ on the "Plugin Settings" page displaying two check boxes. One to enable/disable
 the forwarding of *all public* postings to Twitter and one to clear the
 personal configuration from the Twitter credentials.
 
+