Convert remaining uses of alloc] init] to new]

Summary: public

We moved to using `new` instead of `alloc] init` but there was still some calls
left.

Reviewed By: javache

Differential Revision: D2604679

fb-gh-sync-id: ff7300ecbedb55dd5e93873592598810c9b87808

Libraries/ART/ViewManagers/ARTGroupManager.m

@@ -17,7 +17,7 @@ RCT_EXPORT_MODULE()
 
 - (ARTNode *)node
 {
-  return [[ARTGroup alloc] init];
+  return [ARTGroup new];
 }
 
 @end

Libraries/ART/ViewManagers/ARTNodeManager.m

@@ -17,7 +17,7 @@ RCT_EXPORT_MODULE()
 
 - (ARTNode *)node
 {
-  return [[ARTNode alloc] init];
+  return [ARTNode new];
 }
 
 - (UIView *)view

Libraries/ART/ViewManagers/ARTRenderableManager.m

@@ -17,7 +17,7 @@ RCT_EXPORT_MODULE()
 
 - (ARTRenderable *)node
 {
-  return [[ARTRenderable alloc] init];
+  return [ARTRenderable new];
 }
 
 RCT_EXPORT_VIEW_PROPERTY(strokeWidth, CGFloat)

Libraries/ART/ViewManagers/ARTShapeManager.m

@@ -18,7 +18,7 @@ RCT_EXPORT_MODULE()
 
 - (ARTRenderable *)node
 {
-  return [[ARTShape alloc] init];
+  return [ARTShape new];
 }
 
 RCT_EXPORT_VIEW_PROPERTY(d, CGPath)

Libraries/ART/ViewManagers/ARTSurfaceViewManager.m

@@ -17,7 +17,7 @@ RCT_EXPORT_MODULE()
 
 - (UIView *)view
 {
-  return [[ARTSurfaceView alloc] init];
+  return [ARTSurfaceView new];
 }
 
 @end

Libraries/ART/ViewManagers/ARTTextManager.m

@@ -18,7 +18,7 @@ RCT_EXPORT_MODULE()
 
 - (ARTRenderable *)node
 {
-  return [[ARTText alloc] init];
+  return [ARTText new];
 }
 
 RCT_EXPORT_VIEW_PROPERTY(alignment, CTTextAlignment)