Updated copyright and header information.

Replaced 'echo' with 'printf' throughout.

Added licensing terms and slight doc cleanup.

Minor prompt change.

Fixed minor example string error.

Functionalized the guts of the code.

Factored out list of prompts into a single variable for ease of maintenance.

Cleaned up a minor bug and improved documentation/examples.

Fixed bug that occured when user provided one of the correct answers.

Initial Version