#1225 - Renaming getAccessToken method to sharedAccessToken to avoid any iOS get naming conventions

include/mbgl/ios/MGLAccountManager.h

@@ -1,6 +1,6 @@
 @interface MGLAccountManager : NSObject
 
 + (instancetype) sharedInstanceWithAccessToken:(NSString *)token;
-+ (NSString *) getAccessToken;
++ (NSString *) sharedAccessToken;
 
 @end

platform/ios/MGLAccountManager.m

@@ -40,7 +40,7 @@ static MGLAccountManager *_sharedManager;
     return _sharedManager;
 }
 
-+ (NSString *) getAccessToken {
++ (NSString *) sharedAccessToken {
     if (_sharedManager) {
         return _sharedManager.accessToken;
     }

platform/ios/MGLMapView.mm

@@ -123,7 +123,7 @@ mbgl::DefaultFileSource *mbglFileSource = nullptr;
     if (self && [self commonInit])
     {
         self.styleURL = nil;
-        self.accessToken = [MGLAccountManager getAccessToken];
+        self.accessToken = [MGLAccountManager sharedAccessToken];
         return self;
     }