refactor enter preparing
Merge pull request #64 from fengjingchao/dev

refactor enter preparing
fix travis: glog
Merge pull request #65 from fengjingchao/dev

fix travis: glog
add network layer
Merge pull request #66 from fengjingchao/dev

add network layer
finish network transporter
Merge pull request #67 from fengjingchao/master

finish network transporter
Merge pull request #69 from go-distributed/master

Master
add transporter in replica New
Merge pull request #70 from fengjingchao/dev

add transporter in replica New
fix udp listener and prototype of server app
Merge pull request #71 from fengjingchao/dev

fix udp listener and prototype of server app
stash
Merge branch 'proj3' of github.com:go-epaxos/epaxos into timeout

Conflicts:
	replica/replica.go
feat(timeout)

finish unitest