#354 Add maven model for feature toggle design pattern

double-dispatch/index.md

@@ -10,15 +10,17 @@ tags:
  - Idiom
 ---
 
-**Intent:** Double Dispatch pattern is a way to create maintainable dynamic
+## Intent
+Double Dispatch pattern is a way to create maintainable dynamic
 behavior based on receiver and parameter types.
 
 ![alt text](./etc/double-dispatch.png "Double Dispatch")
 
-**Applicability:** Use the Double Dispatch pattern when
+## Applicability
+Use the Double Dispatch pattern when
 
 * the dynamic behavior is not defined only based on receiving object's type but also on the receiving method's parameter type.
 
-**Real world examples:** 
+## Real world examples
 
 * [ObjectOutputStream](https://docs.oracle.com/javase/8/docs/api/java/io/ObjectOutputStream.html)