Add allowshadow property

Sample/Sample Application/SMPLAppDelegate.m

@@ -35,6 +35,7 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
                                                                     rightViewController:[self rightViewController]];
     // Step 3: Configure.
     self.revealController.delegate = self;
+    self.revealController.allowsShadow = YES;
     self.revealController.animationDuration = 0.25;
 
     // Step 4: Apply.

Source/PKRevealController/PKRevealController.h

@@ -108,6 +108,9 @@ FOUNDATION_EXTERN NSString * const PKRevealControllerRecognizesResetTapOnFrontVi
 /// Whether to allow the user to draw further than the respective controllers min width. Dampened to stop at its max width. Defaults to YES.
 @property (nonatomic, assign, readwrite) BOOL allowsOverdraw;
 
+/// Whether to allow the front view draw shadow.
+@property (nonatomic, assign, readwrite) BOOL allowsShadow;
+
 /// Whether to disable front view interaction whenever the controller's state does not equal PKRevealControllerShowsFrontViewController. Recommended for smaller screens.
 @property (nonatomic, assign, readwrite) BOOL disablesFrontViewInteraction;
 

Source/PKRevealController/PKRevealController.m

@@ -568,7 +568,7 @@ - (void)setupContainerViews
     self.leftView.viewController = self.leftViewController;
     self.frontView.viewController = self.frontViewController;
 
-    self.frontView.shadow = YES;
+    self.frontView.shadow = self.allowsShadow;
 
     self.leftView.hidden = YES;
     self.rightView.hidden = YES;