Update README.md

Adding a missing 'r'.
Merge pull request #40 from HackSkill/patch-1

Update README.md
Update Decorator.php
Merge pull request #42 from Danielss89/patch-1

Fixed typo
little typo
Changed the link of Dependency Injection from Wikipedia DE to Wikipedia EN
Merge pull request #43 from cgarciagl/master

little typo
Merge pull request #44 from HassanCehef/master

typo in wikipedia links
added LogicException
Merge pull request #45 from Shaked/patch-1

added LogicException
removed sentence about meta-factory-method
Update Facade.php
Merge pull request #48 from gbecchio/patch-1

fixed typo
remove shipOrder and completeOrder parameter
Merge pull request #49 from faisalarbain/patch-1

remove obsolete shipOrder and completeOrder parameter
add missing barPrototype
Added Specification pattern
Singleton Diagram
Merge pull request #50 from johnikx/prototype-improvement

added missing barPrototype
Spelling fix in README