Add "exit" command to CLI

Author: rastating

lib/cli/console.rb

@@ -103,6 +103,7 @@ def on_event_emitted(event)
     end
 
     def execute_user_command(command, args)
+      command = 'quit' if command == 'exit'
       if can_handle? command
         puts unless commands_without_output.include? command
         send(command, *args) if correct_number_of_args?(command, args)