nacos 发布版本: 0.4.0(Nov 7, 2018)

[#216] Fix tenant dir problem [#197] Service update ignored some properties [#190] Client beat lose weight info and metadata info [#188] Console delete data cannot be updated in time [#179] Listening query fail when namespace is not blank [#157] Lack information in readme.md to describe the related project repositories for Nacos echosystem [#144] There have a error and something are not clear [#106] Snapshot file create error [#92] Eliminate warnings, refactor code, show start.log detail