Merge remote-tracking branch 'origin/master'

Author: iammert

README.md

@@ -59,6 +59,9 @@ expandableLayout.setCollapseListener(new ExpandCollapseListener.CollapseListener
 ```java
 Section<FruitCategory, Fruit> section = new Section<>();
 
+//defaut is false
+section.expanded = true;
+
 FruitCategory fruitCategory = new FruitCategory("Fruits");
 Fruit fruit1 = new Fruit("Apple");
 Fruit fruit2 = new Fruit("Orange");