Add Examples and Enticements to the README

[GeoffreyPS]

What does this do on a high level?

This adds new sections to the README that explain at a high level what Checker Cab does, and at a more granular level how this library would be used.

How was this change made?

📝

Why is this change necessary?

The README should give an idea of how the library is used and if it is applicable to a reader's needs.

How will this be verified?

• [ ] The PR includes new tests
• [X] Current test suite covers functionality
• [ ] This has been tested locally
• [ ] This has been tested in staging

Any additional information or special handling required on this PR?

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