Update README.md

README.md

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 # git-webhook-robification [![Build Status](https://travis-ci.org/josemrobles/git-webhook-robification.svg?branch=master)](https://travis-ci.org/josemrobles/git-webhook-robification)
-Takes a Git Webhook and sends a robification :)
+Creates an API which accepts a git webhook post for new PR's. Once received, two dev team members are selected as reviewers then a notification is sent using my [robification-go](https://github.com/josemrobles/robification-go) library.
+
+***Example:***
+```
+curl -X POST -H "token: 37f7f7446d64345dd367744428837fe5" -H "Content-Type: application/json" -d '{{"action": "opened","number": 280,"pull_request": {"html_url": "https://github.com/orgname/repo/pull/280","user": {"login": "josemrobles"}}}}' 'http://localhost:8008/'
+```