Proto commits in Tencent/paxosstore

These 9 commits are when the Protocol Buffers files have changed:

Commit:120ce53
Author:rockzheng

Update code.

The documentation is generated from this commit.

Commit:d7d2d43
Author:rockzheng

Delete old.

Commit:40ada56
Author:codeeply

Update certain.

Commit:bdbb495
Author:codeeply
Committer:codeeply

Update certain.

Commit:02c2261
Author:codeeply
Committer:codeeply

Update certain

Commit:efac992
Author:codeeply
Committer:codeeply

update example

Commit:0df46db
Author:codeeply

format the code

Commit:c51b920
Author:dengoswei

fix example/membase_paxoskv

Commit:aca2d18
Author:dengoswei

init add;