A small project that demonstrates the observer pattern in PHP.

##Advantages

##Output

In Demo 
Current conditions: Temperature is 78.3F, humidity is 65.3%Heat Index: 80.904481981658
Current conditions: Temperature is 50.3F, humidity is 25.3%Heat Index: 74.117083380304

This project was based off of the observer example given in the Head First Design Patterns book by Eric Freeman and Elisabeth Robson