Documentation and whitespace tweaks.

platform/darwin/src/MGLFeature.mm

@@ -430,7 +430,7 @@ - (NSDictionary *)geoJSONDictionary {
         return [MGLShapeCollectionFeature shapeCollectionWithShapes:shapes];
     }
 
-private:        
+private:
     static CLLocationCoordinate2D toLocationCoordinate2D(const mbgl::Point<T> &point) {
         return CLLocationCoordinate2DMake(point.y, point.x);
     }

platform/darwin/test/MGLCodingTests.mm

@@ -53,7 +53,7 @@ - (void)testPointFeatureCluster {
         @"cluster" : @(YES),
         @"cluster_id" : @(456),
         @"point_count" : @(2),
-        };
+    };
 
     XCTAssert([pointFeature isKindOfClass:[MGLPointFeature class]], @"");
 

platform/ios/jazzy.yml

@@ -69,12 +69,14 @@ custom_categories:
     children:
       - MGLFeature
       - MGLPointFeature
+      - MGLPointFeatureCluster
       - MGLPolygonFeature
       - MGLPolylineFeature
       - MGLMultiPolygonFeature
       - MGLMultiPolylineFeature
       - MGLPointCollectionFeature
       - MGLShapeCollectionFeature
+      - MGLEmptyFeature
   - name: Style Content
     children:
       - MGLSource