update https requests in readme

Author: Soulou

README.md

@@ -23,4 +23,6 @@ You can install `curl-unix-socket-git` from AUR, thank you @slopjong
   * Example: `-H 'Accept: application/json|Content-type: application/json'`
 * `-b`: Add Cookie
   * Example: `-b 'Key=Value|Key2=Value2'`
+* `-https`: Make an HTTPS request over the unix socket
+* `-k`: Allow unsecure HTTPS requests, don't check certificate
 * `-v`: Verbose