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 # PHP Observer
 PHP Observer is a PHP library to implement the [observer pattern](https://en.wikipedia.org/wiki/Observer_pattern).
 
+![class-diagram](http://www.plantuml.com/plantuml/png/XL0nRiCm3Dpv2iBmu3JmqDKeZ01zG8U-G9ReM8KifY8Tf2Zozzf9v0HPgeaw7dbtt8cQfDCOGFc0ojYnAe_eV2AhdYE0wKIJiOgVK_SrW_WBY7NmecyVdL0wKcgnv5ifWBWrgiOELMxVkvi6Z-pTmd7qFoUo-lwdoiWPPe0mKA_8VVRJD5SQ8FQSQ5wALQc3bxfTJQ6H1u5BWkMjKDrE1sUKheCRG3m3HOUB7W3OO4JmdQDDf9JlG2UTEP9zGCQBrmAvJdu_Q8t5Iu5hnWRlZbh8-zRsCbWlwUgbVDPhq8YmzKPf7WRmKIdrnjAw_v9hUqkItPHsC75FxlP_k2vzJoP8DVeJEInPXyljE-O0vnpvsQ8V3u56YYghAkmekcaCVm00)
+
 ## Requirements
 PHP Observer has the following requirements: