corrected arguments for send_request at vrrp_list method.
modified to use send_event at vrrp_config_change method.
fixed method name.
ryu/services/vrrp/router.py",  in vrrp_config_change_request_handler
    self.state_impl.vrrp_config_chnage_request(ev)
AttributeError: 'VRRPV3StateMaster' object has no attribute 'vrrp_config_chnage_request'

fixed attribute name.
ev.Advertisement_inerval to ev.advertisement_interval
fixed argument for event.EventReplyBase constructor.
ryu/services/vrrp/event.py", in __init__
    super(EventVRRPListReply, self).__init__()
TypeError: __init__() takes exactly 2 arguments (1 given)
Merge pull request #2 from yokoi-h/vrrp-june-05-2013

Vrrp june 05 2013