Add strategy pattern directory with basic overview
Add fully working example of Strategy pattern in PHP
Fix example name typo
Add example output for reference
Merge pull request #20 from sergeylukin/1-strategy-pattern

Add Strategy pattern overview with basic examples
Add credits to external resources
Merge pull request #22 from sergeylukin/credits

Add credits to external resources
added credit to the credits list
Revert "added credit to the credits list"

This reverts commit 7447f5c181819ed432617ac5991886d6f505398f.