update code

.doc/docs/guide/simple-cli.md

@@ -44,4 +44,8 @@ Run previous command.
 Clear the history command.
 ```bash
 clear
+```
+Get version of tools-web.
+```bash
+-v
 ```

shell.js

@@ -62,6 +62,7 @@ class Shell{
 			}
 		}
 		this.root = this.env.root
+		this.version = 'v1.0'
 		this.framework = null
 		this.LIST = ['react', 'vue', 'express']
 		this.arg = []
@@ -109,7 +110,6 @@ class Shell{
 		}
 		this.history.push(this.arg)
 
-
 		if(this.LIST.indexOf(firstArg) !== -1){
 			this.framework = firstArg
 			isFound = true
@@ -197,6 +197,11 @@ class Shell{
 			})
 			this.exit()
 		}
+		if(['-v', '--version'].indexOf(firstArg) !== -1){
+			isFound = true
+			this.log(this.version)
+			this.exit()
+		}
 		var handle = () => {
 			if(this.startcli && !isFound){
 				const checkIndex = (text, arg1, arg2) => {