updated readme

config/initializers/session_store.rb

@@ -0,0 +1,8 @@
+# Be sure to restart your server when you modify this file.
+
+Community::Application.config.session_store :cookie_store, :key => '_community_session'
+
+# Use the database for sessions instead of the cookie-based default,
+# which shouldn't be used to store highly confidential information
+# (create the session table with "rails generate session_migration")
+# Community::Application.config.session_store :active_record_store