added implementation for abstract factory
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/soreco/training/designpatterns/creational/abstractfactory/ElfKingdomFactory.java
	src/main/java/soreco/training/designpatterns/creational/abstractfactory/KingdomFactory.java
	src/main/java/soreco/training/designpatterns/creational/abstractfactory/OrcKingdomFactory.java