docs: update docs

fix: update go version to 1.11

Merge pull request fagongzi#109 from k4s/master

fix:api_server router

fix: ci

fix: ci

dev: add ui into docker

docs: add websocket docs

fix: fagongzi#87

Merge pull request fagongzi#81 from archfish/master

makefile add default target, add benchmark doc

fix: fagongzi#76 and fagongzi#77