README : mention du message d'aide

README.md

@@ -116,3 +116,11 @@ You can also list all available virtual machines by running this command:
 ```sh
 qemush ls
 ```
+
+### Other uses
+
+You can show the full list of possible actions by running this command:
+
+```sh
+qemush help
+```

bin/qemush

@@ -35,18 +35,18 @@ public_help() {
     name="$(basename "$0")"
     exec cat << EOF
 ${name}: usage:
-  ${name} active                      - (default behaviour) list active VMs
-  ${name} start <VM name>             - start a VM
-  ${name} watch <VM name>             - attach VM screen session
-  ${name} ls                          - list available VMs
-  ${name} edit <VM name>              - edit VM launching script
-  ${name} rm <VM name>                - delete launch script
-  ${name} diskls                      - list available disk images
-  ${name} diskadd <disk name> <size>  - create a disk image
-  ${name} diskrm <disk name>          - delete disk image
-  ${name} shell                       - start a shell as user qemu
-  ${name} help                        - show this help
-  ${name} add <path to script>        - add a launching script from this PATH
+  ${name} active                           - (default behaviour) list active VMs
+  ${name} start <VM name>                  - start a VM
+  ${name} watch <VM name>                  - attach VM screen session
+  ${name} ls                               - list available VMs
+  ${name} edit <VM name>                   - edit VM launching script
+  ${name} rm <VM name>                     - delete launch script
+  ${name} diskls                           - list available disk images
+  ${name} diskadd <disk name> <size>       - create a disk image
+  ${name} diskrm <disk name>               - delete disk image
+  ${name} shell                            - start a shell as user qemu
+  ${name} help                             - show this help
+  ${name} add <path to script> [<VM name>] - add a launching script
 EOF
 }