Fixes example code for section init. #47

Author: kzaher

Example/Example4_DifferentSectionAndItemTypes.swift

@@ -96,7 +96,14 @@ extension MultipleSectionModel: SectionModelType {
     }
 
     init(original: MultipleSectionModel, items: [Item]) {
-        self = original
+        switch original {
+        case let .ImageProvidableSection(title: title, items: _):
+            self = .ImageProvidableSection(title: title, items: items)
+        case let .StepperableSection(title, _):
+            self = .StepperableSection(title: title, items: items)
+        case let .ToggleableSection(title, _):
+            self = .ToggleableSection(title: title, items: items)
+        }
     }
 }