Add Factory Method presentation

factory-method/README.md

@@ -69,7 +69,11 @@ Use the Factory Method pattern when
 * a class wants its subclasses to specify the objects it creates
 * classes delegate responsibility to one of several helper subclasses, and you want to localize the knowledge of which helper subclass is the delegate
 
-## Known uses
+## Presentations
+
+* [Factory Method Pattern](etc/presentation.html) 
+
+## Real world examples
 
 * [java.util.Calendar](http://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html#getInstance--)
 * [java.util.ResourceBundle](http://docs.oracle.com/javase/8/docs/api/java/util/ResourceBundle.html#getBundle-java.lang.String-)