Brought readme up to date

twitter/README

@@ -50,14 +50,9 @@ __ Global Configuration __
 If you enabled an administrator account, please use the admin panel to cofigure
 the Twitter relay.
 
-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';
+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 
+plugin page.
 
 When this is done your user can now configure their Twitter connection at
 "Settings -> Plugin Settings" and enable the forwarding of their *public*