doc: add conf template
bump version to v0.22.0
frpc: support health check
Update README_zh.md
fix typo
Fix setting basic auth password doc
support health check and code refactor
update golib, fix #959
refactor code
Bump Travis versions
Grammar fixes and improved README
I think this reads nicer and more accurately describes the HTTP reverse proxying.
Upgrade dockerfile golang to 1.10
bump version to v0.21.0
Connect protocol support websocket
Fix the problem of long connection for more than 30 seconds and disconnection of the server
websocket protocol
update xtcp log info
cmd: frps: allow_ports option