Merge pull request #77 from 1000ship/issue/76

remove webview bounce on iOS

Author: LonelyCpp

src/YoutubeIframe.js

@@ -190,6 +190,7 @@ const YoutubeIframe = (props, ref) => {
         onShouldStartLoadWithRequest={request => {
           return request.mainDocumentURL === 'about:blank';
         }}
+        bounces={false}
         {...webViewProps}
       />
     </View>