Update README.md

fix README.md

Merge pull request #26 from godliam/master

fix client.builtin.cpu CpuMetrics

add backend 'rest-kairos' for repe

fix conf sample

add config, add conf 'check host status interval secs' for cfc

fix init

remove 'DROP TABLE IF EXISTS' for db schema

fix go mod

fix go mod

fix deploy doc

add demo pic

fix deploy doc

security update