message: Add HTTP client README
diff: @@ -171,6 +171,15 @@ sslocal -b "127.0.0.1:1080" -s "[::1]:8388" -m "aes-256-gcm" -k "hello-kitty" --
  sslocal -b "127.0.0.1:1080" --server-url "ss://YWVzLTI1Ni1nY206cGFzc3dvcmQ@127.0.0.1:8388/?plugin=obfs-local%3Bobfs%3Dtls"
  ```
  +### HTTP Local client
  +
  +```bash
  +# Read local client configuration from file
  +sslocal -c /path/to/shadowsocks.json --protocol http
  +```
  +
  +All parameters are the same as Socks5 client, except `--protocol http`.
  +
  ### Tunnel Local client
  ```bash
  @@ -242,7 +251,7 @@ It supports the following features:
  * [ ] Support more ciphers without depending on `libcrypto` (waiting for an acceptable Rust crypto lib implementation)
  * [x] Windows support.
  * [x] Build with stable.
  -* [ ] Support HTTP Proxy protocol (it is easy to use another tools to convert HTTP proxy protocol to Socks5, like `privoxy`)
  +* [x] Support HTTP Proxy protocol
  * [ ] One-time Auth. (Already deprecated according to Shadowsocks' community)
  * [x] AEAD ciphers. (proposed in [SIP004](https://github.com/shadowsocks/shadowsocks-org/issues/30), still under discussion)
  * [x] Choose server based on delay #152
  