Switch from IBInspectable to UI_APPEARANCE_SELECTOR

Summary:
We cannot have a property that is annotated with both IBInspectable and
UI_APPEARANCE_SELECTOR.  Until we can, we choose UI_APPEARANCE_SELECTOR
so we can utilize UIAppearance for theming.

Reviewers: randallli, #material_components_ios_owners

Reviewed By: randallli, #material_components_ios_owners

Projects: #material_components_ios

Differential Revision: http://codereview.cc/D118

Author: Ian Gordon

components/Switch/src/MDCSwitch.h

@@ -32,19 +32,19 @@ NS_CLASS_AVAILABLE_IOS(7_0)
 
 // TODO(iangordon): Unify our Color handling over all of our components
 /** The color of the thumb and track in the on position. */
-@property(null_resettable, nonatomic, strong) IBInspectable UIColor *onTintColor;
+@property(null_resettable, nonatomic, strong) UIColor *onTintColor UI_APPEARANCE_SELECTOR;
 
 /** The color of the thumb in the off position. */
-@property(null_resettable, nonatomic, strong) IBInspectable UIColor *offThumbColor;
+@property(null_resettable, nonatomic, strong) UIColor *offThumbColor UI_APPEARANCE_SELECTOR;
 
 /** The color of the track in the off position. */
-@property(null_resettable, nonatomic, strong) IBInspectable UIColor *offTrackColor;
+@property(null_resettable, nonatomic, strong) UIColor *offTrackColor UI_APPEARANCE_SELECTOR;
 
 /** The color of the thumb when disabled. */
-@property(null_resettable, nonatomic, strong) IBInspectable UIColor *disabledThumbColor;
+@property(null_resettable, nonatomic, strong) UIColor *disabledThumbColor UI_APPEARANCE_SELECTOR;
 
 /** The color of the track when disabled. */
-@property(null_resettable, nonatomic, strong) IBInspectable UIColor *disabledTrackColor;
+@property(null_resettable, nonatomic, strong) UIColor *disabledTrackColor UI_APPEARANCE_SELECTOR;
 
 /**
  * Boolean value that determines the off/on state of the switch.