add sample image

Author: rudyhuynh

README.md

@@ -1,2 +1,5 @@
-# react-native-svg-circular-progress
+# React Native Svg Circular Progress
+
 A circular progress chart using react-native-svg
+
+![sample <>](https://github.com/rudyhuynh/front-end-note/blob/master/react1-react-component-hierachy.png "Sample")