Add usage to readme

Author: norrland

README.md

@@ -13,3 +13,29 @@ Obtain a user account and API key [here](https://cloud.glesys.com).
 `GLESYS_USERID` - Project name "CL12345"
 
 `GLESYS_TOKEN` - API Key "abcx98765"
+
+## Usage from `glectl -h`
+
+```
+A longer description that spans multiple lines and likely contains
+examples and usage of using your application. For example:
+
+Cobra is a CLI library for Go that empowers applications.
+This application is a tool to generate the needed files
+to quickly create a Cobra application.
+
+Usage:
+  glectl [command]
+
+Available Commands:
+  completion  Generate completion script
+  help        Help about any command
+  ip          Manage IPs in your current GleSYS project.
+  server      Manage GleSYS servers in your project.
+
+Flags:
+  -h, --help     help for glectl
+  -t, --toggle   Help message for toggle
+
+Use "glectl [command] --help" for more information about a command.
+```