Add steps for collaborating
Merge pull request #4 from sergeylukin/3-contribution

Add steps for collaborating
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
added the state pattern #16
Merge pull request #1 from raslin/16-state-pattern

16 state pattern