[FEAT]: Readme instructions for scanning

[shawnsnyk]

Is there an existing feature request for this?

• [X] I have searched the existing feature requests

Description

Customers pull down goof, java goof etc all the time. Need instructions that point to the java scanning documentation and also potentially give scanning instructions, like in the java-goof, it requires all-projects or --maven-aggregate-project. While the CLI intelligently does give hints, some customers are very novice on the technical level (i.e. pure security or managers) and need the help (sometimes it's a language barrier).

Additional Information

No response