update README.md
merge for new README_zh.md
doc: update README_zh.md
release v0.7.0
support privilege mode
add support for https
cmd/frps: fix a bug when vhost_http_port is not set, fix #30
User can set use aes or gzip
add https proto for reverse proxy
release v0.6.0
fetch commits from master
[new] Optimize for http services.Support virtual host and custom domain binding. [new] Support max days of keeping log files. [fix] Fix a bug when reconnecting.