Merge remote-tracking branch 'origin/master' into feature/route_filter

.travis.yml

README.md

config/peer.go

main.go

net/helper.go

net/helper_test.go

protocols/bgp/packet/bgp.go

protocols/bgp/packet/decoder.go

protocols/bgp/packet/decoder_test.go

protocols/bgp/packet/encoder.go

protocols/bgp/packet/encoder_test.go

protocols/bgp/packet/nlri.go

protocols/bgp/packet/nlri_test.go

protocols/bgp/packet/parameters.go

protocols/bgp/packet/path_attributes.go

protocols/bgp/packet/path_attributes_test.go

protocols/bgp/server/fsm.go

protocols/bgp/server/peer.go

protocols/bgp/server/update_sender.go

protocols/bgp/server/update_sender_add_path.go