Update README.md

README.md

@@ -22,5 +22,4 @@ ssh-add /path/to/your/private/key
 ```
 You can now ssh into your virtual machine using `ssh ubuntu@vm-public-ip`.
 
-#### Remove the terraform instance
-Simply run `terraform destroy`
+To remove your VM, run `terraform destroy -var-file=cluster.tfvars`