enum clarifications

@@ -37,7 +37,7 @@
 #import "RMMBTilesSource.h"
 #import "RMMapBoxSource.h"
 
-typedef enum {
+typedef enum : NSUInteger {
     RMInteractiveSourceOutputTypeTeaser = 0,
     RMInteractiveSourceOutputTypeFull   = 1,
 } RMInteractiveSourceOutputType;

@@ -31,7 +31,7 @@
 
 @class RMMarkerStyle;
 
-typedef enum {
+typedef enum : NSUInteger {
     RMMarkerMapBoxImageSizeSmall,
     RMMarkerMapBoxImageSizeMedium,
     RMMarkerMapBoxImageSizeLarge

@@ -31,7 +31,7 @@
 #import "RMMapView.h"
 #import "RMUserLocation.h"
 
-typedef enum {
+typedef enum : NSUInteger {
     RMUserTrackingButtonStateNone     = 0,
     RMUserTrackingButtonStateActivity = 1,
     RMUserTrackingButtonStateLocation = 2,