updated BarViews to have optional leftControls and rightControls when in itializing

Sources/iOS/BarView.swift

@@ -61,7 +61,7 @@ public class BarView : ControlView {
 	
 	/// Basic initializer.
 	public override init() {
-		super.init()
+		super.init(leftControls: nil, rightControls: nil)
 	}
 	
 	/**
@@ -69,7 +69,7 @@ public class BarView : ControlView {
 	- Parameter leftControls: An Array of UIControls that go on the left side.
 	- Parameter rightControls: An Array of UIControls that go on the right side.
 	*/
-	public override init(leftControls: Array<UIControl>, rightControls: Array<UIControl>) {
+	public override init(leftControls: Array<UIControl>?, rightControls: Array<UIControl>?) {
 		super.init(leftControls: leftControls, rightControls: rightControls)
 	}
 	

Sources/iOS/ControlView.swift

@@ -145,7 +145,7 @@ public class ControlView : MaterialView {
 	- Parameter leftControls: An Array of UIControls that go on the left side.
 	- Parameter rightControls: An Array of UIControls that go on the right side.
 	*/
-	public init(leftControls: Array<UIControl>, rightControls: Array<UIControl>) {
+	public init(leftControls: Array<UIControl>? = nil, rightControls: Array<UIControl>? = nil) {
 		super.init(frame: CGRectZero)
 		prepareView()
 		prepareProperties(leftControls, rightControls: rightControls)

Sources/iOS/SearchBar.swift

@@ -121,7 +121,7 @@ public class SearchBar : BarView {
 	- Parameter leftControls: An Array of UIControls that go on the left side.
 	- Parameter rightControls: An Array of UIControls that go on the right side.
 	*/
-	public override init(leftControls: Array<UIControl>, rightControls: Array<UIControl>) {
+	public override init(leftControls: Array<UIControl>?, rightControls: Array<UIControl>?) {
 		super.init(leftControls: leftControls, rightControls: rightControls)
 	}
 	

Sources/iOS/Toolbar.swift

@@ -84,7 +84,7 @@ public class Toolbar : BarView {
 	- Parameter leftControls: An Array of UIControls that go on the left side.
 	- Parameter rightControls: An Array of UIControls that go on the right side.
 	*/
-	public override init(leftControls: Array<UIControl>, rightControls: Array<UIControl>) {
+	public override init(leftControls: Array<UIControl>?, rightControls: Array<UIControl>?) {
 		super.init(leftControls: leftControls, rightControls: rightControls)
 	}