client: add prefix to KeysAPI
client: unexport HTTPKeysAPI
etcdserver/etcdhttp: break apart http.go
client: MembersAPI.List
Merge pull request #1414 from bcwaldon/client-members-API

Add MembersAPI w/ List method
raft: remove unused code
*: better logging
Merge pull request #1415 from bcwaldon/http-refactor

etcdserver/etcdhttp: break apart http.go
etcdserver/etcdhttp: break apart HTTP handlers
Merge pull request #1423 from bcwaldon/http-refactor-hdlrs

eradicate serverHandler
pkg: add README.md
Merge pull request #1421 from xiangli-cmu/logging

*: better logging
Merge pull request #1420 from xiangli-cmu/clean_log

raft: remove unused code
etcdhttp: attach clusterID to key and adminMember endpoint
Merge pull request #1424 from bcwaldon/pkg-readme

pkg: add README.md
pkg: move everything into subpackages
Merge pull request #1426 from xiangli-cmu/clusterid

etcdhttp: attach clusterID to key and adminMember endpoint
Merge pull request #1428 from jonboulle/subpackages

pkg: move everything into subpackages
etcdserver: parse context error for better message
Merge pull request #1422 from unihorn/187

etcdserver: parse context error for better message