Add creational patterns, Interpreter; remove scripts; update README

01-creational/abstract-factory/MacFactory.java

@@ -0,0 +1,6 @@
+package abstractfactory;
+
+public class MacFactory implements GUIFactory {
+    @Override public Button   createButton()   { return new MacButton(); }
+    @Override public Checkbox createCheckbox() { return new MacCheckbox(); }
+}