finish basic text support on iOS

lib/extract/extractText.js

@@ -1,7 +1,7 @@
 import SerializablePath from '../SerializablePath';
 import _ from 'lodash';
 import React, {Children} from 'react';
-import {fontAndRenderPropsKeys} from '../props';
+import {fontAndRenderPropsKeys, fontPropsKeys} from '../props';
 import Span from '../../elements/Span';
 
 const fontRegExp = /^\s*((?:(?:normal|bold|italic)\s+)*)(?:(\d+(?:\.\d+)?)[ptexm%]*(?:\s*\/.*?)?\s+)?\s*"?([^"]*)/i;
@@ -209,8 +209,11 @@ export default function(props) {
                 ...extractFont(frame.props)
             }
         };
-        
-        return <Span {...spanProps} />;
+
+        return <Span
+            {..._.omit(frame.props, fontPropsKeys)}
+            frame={spanProps}
+        />;
     });
 
     return {