added 'quiet' config option to disable printing of cli messages (for running rspecs)

lib/casserver/server.rb

@@ -74,6 +74,10 @@ module CASServer
     end
     
     def self.print_cli_message(msg, type = :info)
+      if respond_to?(:config) && config && config[:quiet]
+        return
+      end
+      
       if type == :error
         io = $stderr
         prefix = "!!! "

resources/config.example.yml

@@ -525,11 +525,18 @@ log:
 # If you want full database logging, uncomment this next section.
 # Every SQL query will be logged here. This is useful for debugging database 
 # problems.
-#
+
 #db_log:
 #  file: /var/log/casserver_db.log
 
 
+# Setting the following option to true will disable CLI output to stdout.
+# i.e. this will get rid of messages like ">>> Redirecting RubyCAS-Server log..."
+# This is useful when, for example, you're running rspecs.
+
+#quiet: true
+
+
 ##### SINGLE SIGN-OUT ##########################################################
 
 # When a user logs in to a CAS-enabled client application, that application