List a range of expected costs on Readme

[dstrivelli]

Hello,

Thank you for taking the time to create this template and make it publicly available for use to the Wordpress/AWS communities. Could you possibly a range of expected costs for this configuration?

I understand that there are a wide variety of parameters in this template that could affect cost, so perhaps you could speak to the typical estimated costs for small, medium, large setups.. etc, etc.

The AWS calculator is a great tool for costing out a build. For someone who has never deployed a template or used the calculator, it can be difficult to set the parameters just right to get a reasonable estimate.

Thank you for consideration.