Update README.md

README.md

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-# delete confirmation kubectl plugin
- A simple plugin for kubectl to prevent fuck ups
+# kubectl delete confirmation script
+
+It's a really simple script with less than 50 lines of code yet, in my opinion, 
+a useful middleware to prevent irreversible mistakes.
+
+### How to use?
+- `go build`
+- 'mv kubectl-confirm-delete /usr/share/mydir/'
+- Add this alias to your zshrc or bashrc
+- `alias kubectl="/usr/share/mydir/kubectl-confirm-delete"`
+
+Then, if you run "kubectl delete whatever_resource whatever_name", you should be able to see 
+the confirmation message.