add mac demo

Author: irustm

README.md

@@ -43,6 +43,12 @@ npm start
 
 [Link](https://github.com/irustm/angular-nodegui/tree/master/projects/weather-demo)
 
+#### Mac
+<p align="center">
+  <img src="https://raw.githubusercontent.com/irustm/angular-nodegui/master/demo/demo_weather_widget_mac.png" width="600" title="angular nodegui demo">
+</p>
+
+#### Windows
 <p align="center">
   <img src="https://raw.githubusercontent.com/irustm/angular-nodegui/master/demo/demo_weather_widget.png" width="600" title="angular nodegui demo">
 </p>