Update README.md

Author: ycarowr

README.md

@@ -55,6 +55,7 @@ Most of the of references are listed on the bottom of this page, as well as more
 
 ### Structural Patterns
  1. [Composite](https://github.com/ycarowr/Unity-Design-Patterns/tree/master/Assets/Structural/Composite)
+ 2. [Bridge](https://github.com/ycarowr/Unity-Design-Patterns/tree/master/Assets/Structural/Bridge)
 
 ### References