docs: auto generate Dragonfly cli/api docs via code

Signed-off-by: pouchrobot <[email protected]>

docs/cli_reference/dfdaemon.md

@@ -31,6 +31,6 @@ dfdaemon [flags]
 
 ### SEE ALSO
 
-* [dfdaemon gen-doc](dfdaemon_gen-doc.md)	 - Generate Document for dfdaemon command line tool with MarkDown format
+* [dfdaemon gen-doc](dfdaemon_gen-doc.md)	 - Generate Document for dfdaemon command line tool in MarkDown format
 * [dfdaemon version](dfdaemon_version.md)	 - Show the current version of dfdaemon
 

docs/cli_reference/dfdaemon_gen-doc.md

@@ -1,10 +1,10 @@
 ## dfdaemon gen-doc
 
-Generate Document for dfdaemon command line tool with MarkDown format
+Generate Document for dfdaemon command line tool in MarkDown format
 
 ### Synopsis
 
-Generate Document for dfdaemon command line tool with MarkDown format
+Generate Document for dfdaemon command line tool in MarkDown format
 
 ```
 dfdaemon gen-doc [flags]

docs/cli_reference/dfget.md

@@ -66,7 +66,7 @@ download SUCCESS cost:0.026s length:141898 reason:0
 
 ### SEE ALSO
 
-* [dfget gen-doc](dfget_gen-doc.md)	 - Generate Document for dfget command line tool with MarkDown format
+* [dfget gen-doc](dfget_gen-doc.md)	 - Generate Document for dfget command line tool in MarkDown format
 * [dfget server](dfget_server.md)	 - Launch a peer server for uploading files.
 * [dfget version](dfget_version.md)	 - Show the current version of dfget
 

docs/cli_reference/dfget_gen-doc.md

@@ -1,10 +1,10 @@
 ## dfget gen-doc
 
-Generate Document for dfget command line tool with MarkDown format
+Generate Document for dfget command line tool in MarkDown format
 
 ### Synopsis
 
-Generate Document for dfget command line tool with MarkDown format
+Generate Document for dfget command line tool in MarkDown format
 
 ```
 dfget gen-doc [flags]

docs/cli_reference/supernode.md

@@ -0,0 +1,42 @@
+## supernode
+
+the central control server of Dragonfly used for scheduling and cdn cache
+
+### Synopsis
+
+SuperNode is a long-running process with two primary responsibilities:
+It's the tracker and scheduler in the P2P network that choose appropriate downloading net-path for each peer.
+It's also a CDN server that caches downloaded data from source to avoid downloading the same files from source repeatedly.
+
+```
+supernode [flags]
+```
+
+### Options
+
+```
+      --advertise-ip string             the supernode ip is the ip we advertise to other peers in the p2p-network
+      --config string                   the path of supernode's configuration file (default "/etc/dragonfly/supernode.yml")
+  -D, --debug                           switch daemon log level to DEBUG mode
+      --down-limit int                  download limit for supernode to serve download tasks (default 4)
+      --download-port int               downloadPort is the port for download files from supernode (default 8001)
+      --fail-access-interval duration   fail access interval is the interval time after failed to access the URL (default 3m0s)
+      --gc-initial-delay duration       gc initial delay is the delay time from the start to the first GC execution (default 6s)
+      --gc-meta-interval duration       gc meta interval is the interval time to execute the GC meta (default 2m0s)
+  -h, --help                            help for supernode
+      --home-dir string                 homeDir is the working directory of supernode (default "/home/admin/supernode")
+      --max-bandwidth rate              network rate that supernode can use (default 200MB)
+      --peer-gc-delay duration          peer gc delay is the delay time to execute the GC after the peer has reported the offline (default 3m0s)
+      --pool-size int                   pool size is the core pool size of ScheduledExecutorService (default 10)
+      --port int                        listenPort is the port that supernode server listens on (default 8002)
+      --profiler                        profiler sets whether supernode HTTP server setups profiler
+      --system-bandwidth rate           network rate reserved for system (default 20MB)
+      --task-expire-time duration       task expire time is the time that a task is treated expired if the task is not accessed within the time (default 3m0s)
+      --up-limit int                    upload limit for a peer to serve download tasks (default 5)
+```
+
+### SEE ALSO
+
+* [supernode gen-doc](supernode_gen-doc.md)	 - Generate Document for supernode command line tool in MarkDown format
+* [supernode version](supernode_version.md)	 - Show the current version of supernode
+

docs/cli_reference/supernode_gen-doc.md

@@ -0,0 +1,23 @@
+## supernode gen-doc
+
+Generate Document for supernode command line tool in MarkDown format
+
+### Synopsis
+
+Generate Document for supernode command line tool in MarkDown format
+
+```
+supernode gen-doc [flags]
+```
+
+### Options
+
+```
+  -h, --help          help for gen-doc
+  -p, --path string   destination path of generated markdown documents (default "/tmp")
+```
+
+### SEE ALSO
+
+* [supernode](supernode.md)	 - the central control server of Dragonfly used for scheduling and cdn cache
+

docs/cli_reference/supernode_version.md

@@ -0,0 +1,33 @@
+## supernode version
+
+Show the current version of supernode
+
+### Synopsis
+
+Display the version and build information of Dragonfly supernode, including GoVersion, OS, Arch, Version, BuildDate and GitCommit.
+
+```
+supernode version [flags]
+```
+
+### Examples
+
+```
+supernode version  0.4.1
+  Git commit:     6fd5c8f
+  Build date:     20190717-15:57:52
+  Go version:     go1.12.10
+  OS/Arch:        linux/amd64
+
+```
+
+### Options
+
+```
+  -h, --help   help for version
+```
+
+### SEE ALSO
+
+* [supernode](supernode.md)	 - the central control server of Dragonfly used for scheduling and cdn cache
+