Refactor Symbol on iOS

lib/attributes.js

@@ -33,8 +33,7 @@ const ViewBoxAttributes = {
     vbWidth: true,
     vbHeight: true,
     align: true,
-    meetOrSlice: true,
-    name: true
+    meetOrSlice: true
 };
 
 const NodeAttributes = {
@@ -81,6 +80,10 @@ const UseAttributes = merge({
     height: true
 }, RenderableAttributes);
 
+const SymbolAttributes = merge({
+    name: true
+}, ViewBoxAttributes);
+
 const PathAttributes = merge({
     d: true
 }, RenderableAttributes);
@@ -185,6 +188,7 @@ export {
     LineAttributes,
     RectAttributes,
     UseAttributes,
+    SymbolAttributes,
     LinearGradientAttributes,
     RadialGradientAttributes,
     ViewBoxAttributes