Usage:
Access the following site https://mailchimp.com, create an account or log in.
To get an API Key from your MailChimp account, log in and then go to the profile tab, and then click on the tab “Extras“, where the API Key option will be available.
To create a new API key just select the button Create a Key and refresh the page, the code created will be available to be used.
Copy the code created at the "API key" column.
