Merge pull request #55 from xuweibj/build_script

build script to build goconserver

Release candidate for goconserver 0.3.1

Merge pull request #42 from chenglch/grpcclient

Use client cert to access grpc server

Merge pull request #35 from chenglch/version

Bump version to 0.2.2

Merge pull request #28 from neo954/build-scripts

Fix issue #27, failed to create ubuntu package on amd64 platform

Bumped version number to 0.2.0

This commit change the version related docs.

Use rwlock to protect the bufConn map

Map in golang do not support concurrent read and write, use
rwlock to protect it.