Merge pull request yunify#43 from min-zh/dev

release v1.2.0

Merge pull request yunify#42 from min-zh/dev

installation update

Merge pull request yunify#34 from min-zh/master

v1.2.0-rc1

Merge pull request yunify#23 from bmingithub/master

expand volume and neonsan-plugin deploy

Merge pull request yunify#8 from wnxn/master

update docs

Merge pull request yunify#2 from wnxn/master

implement mount and unmount interface