Document regular expression with one or more examples

Problem/Motivation

Thanks for making this module, it looks like it may add a feature lacking in https://www.drupal.org/project/cacheexclude which is regular expression.

Though I am not sure about the syntax ...

Also, I wonder how the module can tell if a line is regular expression, or not?

Steps to reproduce

See that regular expression should be supported, but not sure how ...

Proposed resolution

Maybe you can add a few examples of the correct syntax on the project page?

Remaining tasks

Add one or more regular expression examples under "Usage example"

For example, something like this?

Regular expression example
/\/myview\/[\w]+\/[0-9]+\/[\w]+\/[0-9]+\/.+/

Allows caching this path
/myview/hou/80/nat/10

Ignores this path
/myview/hou/80/nat/10/pes/5

User interface changes

API changes

Data model changes