Update README.md

README.md

@@ -15,10 +15,20 @@ curl -o- https://raw.githubusercontent.com/zcorky/gvm/master/install | bash
 wget -qO- https://raw.githubusercontent.com/zcorky/gvm/master/install | bash
 ```
 
+## Features
+* [x] Switch different versions
+* [x] List all local installed versions
+* [x] List all remote versions
+* [x] Show current version
+* [x] Remove unused versions
+* [x] Local tmp go version with `.gvmrc`
+* [x] Exec command with specify version
+* [x] Enter new shell with specify version
+
 ## Usage
 
 ```markdown
-Go Version Manager (v1.3.7)
+Go Version Manager (v1.5.0)
 
 Go Version Manager is a tool for managing multiple Go versions.
 
@@ -29,16 +39,26 @@ Usage:
   gvm ls                  - List the Go versions installed
   gvm ls-remote           - List all Go versions from remote
   gvm current             - Show current Go version
-  gvm exec                - Enter new shell with go version for tmp
+  gvm exec                - Exec command with Go version
+  gvm shell               - Enter new shell with Go version
   gvm help                - Show help
 
 Example:
-  gvm install v1.18
-  gvm use v1.18
-  gvm remove v1.18
+  gvm install v1.20
+  gvm use v1.20
+  gvm remove v1.20
   gvm ls
   gvm ls-remote
   gvm current
+  gvm exec v1.18 go version
+  gvm shell v1.18
+```
+
+### Local tmp go version with `.gvmrc`
+
+```bash
+# write file .gvmrc with specify go version
+v1.21
 ```
 
 ## FAQ