change some cli and update readme

Cargo.toml

@@ -8,6 +8,7 @@ edition = "2021"
 readme = "README.md"
 repository = "https://github.com/Arikato111/Tenjin"
 categories = ["command-line-utilities"]
+keywords = ["sdn", "cli", "openflow"]
 
 [lib]
 name = "tenjin"

README.md

@@ -6,7 +6,37 @@ Software-defined networking with Rust.
 
 To understand The software-defined networking well, I trying to create a simple SDN with Rust language to support Openflow 1.0 first and 1.3 later.
 
-## Get started
+## Run with command line
+
+#### Run Controller by default (Controller13 with OpenFlow 1.3)
+
+```bash
+tenjin run
+```
+
+#### Run Controller10 with Openflow 1.0
+
+```bash
+tenjin run ctrl10
+```
+
+#### Run with specific port
+
+```bash
+tenjin run --port 6653
+```
+
+#### Show details of `run` command
+
+```bash
+tenjin run --help
+```
+
+## Run only Controller
+
+You need to clone source code to your workspace and modify the code.
+this code below is the example for run only Controller.
+If you would like to modify Controller's code, it waiting for you at ./src/example/
 
 ### Openflow 1.3
 
@@ -16,10 +46,9 @@ To understand The software-defined networking well, I trying to create a simple
 use tenjin::{example, openflow::ofp13::ControllerFrame13};
 extern crate byteorder;
 
-fn main() -> Result<(), std::io::Error> {
+fn main() {
     let controller = example::Controller13::new();
     controller.listener("127.0.0.1:6633");
-    Ok(())
 }
 ```
 
@@ -43,10 +72,9 @@ import Controller10 into main func.
 use tenjin::{example, openflow::ofp10::ControllerFrame10};
 extern crate byteorder;
 
-fn main() -> Result<(), std::io::Error> {
+fn main() {
     let controller = example::Controller10::new();
     controller.listener("127.0.0.1:6633");
-    Ok(())
 }
 ```
 

src/cli/cli_system.rs

@@ -22,11 +22,12 @@ enum Commands {
         port: u16,
         #[arg(
             default_value = "127.0.0.1",
-            short = 'a',
-            long = "address",
+            short = 'l',
+            long = "listen",
+            value_name = "ADDRESS",
             help = "ip address"
         )]
-        address: String,
+        listen: String,
     },
 }
 
@@ -44,9 +45,9 @@ pub fn system() {
         Commands::Run {
             controller,
             port,
-            address,
+            listen,
         } => {
-            let addr = format!("{}:{}", address.as_str(), port.to_string());
+            let addr = format!("{}:{}", listen.as_str(), port.to_string());
             match controller {
                 Some(controller) => match controller {
                     Controllers::Ctrl13 => Controller13::new().listener(&addr),