matchingPatterns method

[epszaw]

Description

This PR adds .matchingPatterns methods, which returns matched patterns. It's very useful, when you need to determine required patterns by given strings and then use them.

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This PR doesn't contain any breaking changes.

I didn't add support for negative lookup, because I can't imaging use-cases for them. But, if you think, that them also should be implemented – let me know.

New Feature

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• Add new passing unit tests to cover the code introduced by your pr
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[epszaw]

@jonschlinkert can someone make review of these changes? :)