Merge pull request #570 from pouchrobot/auto-doc-2019-05-30

docs: auto generate Dragonfly cli/api/contributors docs via code

docs/cli_reference/dfdaemon.md

@@ -25,9 +25,8 @@ dfdaemon [flags]
       --node strings          specify the addresses(IP:port) of supernodes that will be passed to dfget.
       --notbs                 not try back source to download if throw exception (default true)
       --port uint             dfdaemon will listen the port (default 65001)
-      --proxyPort uint        the port dfdaemon proxy listens on (default 65002)
       --ratelimit string      net speed limit,format:xxxM/K
-      --registry string       registry addr(https://abc.xx.x or http://abc.xx.x) and must exist if dfdaemon is used to mirror mode (default "https://index.docker.io")
+      --registry string       registry mirror url, which will override the registry mirror settings in the config file if presented (if not configured through config file or the cli, https://index.docker.io is the default)
       --rule string           download the url by P2P if url matches the specified pattern,format:reg1,reg2,reg3
       --trust-hosts strings   list of trusted hosts which dfdaemon forward their requests directly, comma separated.
       --urlfilter string      filter specified url fields (default "Signature&Expires&OSSAccessKeyId")