readme added

Author: Govindz

README.md

@@ -1,2 +1,12 @@
 # AlertDialog
 React Native application to display custom & normal alert dialog using react native programming.
+
+ALERT 1     |  ALERT 2 |  ALERT 3 |
+:---------:|:----------:|:---------:
+![](https://github.com/ReactNativeCodility/AlertDialog/blob/master/design/main.png?raw=true)  |  ![](https://github.com/ReactNativeCodility/AlertDialog/blob/master/design/custom.png?raw=true) |  ![](https://github.com/ReactNativeCodility/AlertDialog/blob/master/design/normal.png?raw=true) 
+
+# Play Video
+[![](https://github.com/ReactNativeCodility/AlertDialog/blob/master/design/react_alert_video.png?raw=true)](https://youtu.be/U5QginBu_OE "Click here to watch")
+
+# Like Facebook Page
+[![](https://github.com/AndroidCodility/Barchart-Graph/blob/master/design/fb.png?raw=true)](https://www.facebook.com/androidcodility/ "Click here")