update readme

README.md

@@ -22,21 +22,24 @@ Then add this to your ApplicationHelper
 
     module ApplicationHelper
       include FacebookShare
-
-      FacebookShare.default_facebook_share_options = {
-        :framework => :jquery,
-        :jquery_function => "$",
       
-        :app_id => "YOUR_APP_ID",
-        :status => "false",
-        :cookie => "false",
-        :xfbml => "false",
-
-        :selector => '.fb_share',
-        :locale => "en_US"
-      }
     end
 
+Global configuration (config/initializers/facebook_share.rb ): 
+
+    FacebookShare.default_facebook_share_options = {
+      :framework => :jquery,
+      :jquery_function => "$",
+
+      :app_id => "YOUR_APP_ID",
+      :status => "false",
+      :cookie => "false",
+      :xfbml => "false",
+
+      :selector => '.fb_share',
+      :locale => "en_US"
+    }
+
 You can ommit *app_id* parameter, if you already have a Facebook Application initialized in your project.
 
 Be sure you have <div id="fb-root"></div> in your application layout before you load the Facebook Connect JS