MenuEater turns web page into menu object

[samdotme]

As a tech-minded person, I want to be able to run a CLI command with a recipe webpage as an input and receive a recipe object back as a return.

Acceptance Criteria

• Cli command exists that accepts a single argument of a web address.
• If the web address contains no valid recipe markup, the command fails with an error message.
• If the web address contains valid recipe markup, the command returns the markup.

[samdotme]

Testing with normal usage:

Result: Good

Testing with non-recipe page:

Result: Not exactly what we want, but good enough for now.