facebook toggle added in the gem. can now set facebook sharing enabled or disabled using facebook_enabled true/false

lib/announcement.rb

@@ -38,6 +38,7 @@ module Announcement
 			    enable ["typeA", "typeB_style3", "typeC"]
 			    image :image
 			    field :postdate
+			    facebook_enabled false
 			    link_field :title,{:method => 'panel_announcement_front_end_bulletin_path',:args=>:self}
 			    link_field :bulletin_category_with_title,{:method => 'panel_announcement_front_end_bulletins_path',:args=>{:category_id => [:category,:id]}}
 			    field :subtitle