added example screenshots

Author: a7ul

examples/calculator/README.md

@@ -2,11 +2,20 @@
 
 This example showcases how to build a basic calculator clone.
 
-**Screenshot:**
+### Screenshots
+
+**Linux**
 
-<img alt="demo_mac" src="https://github.com/master-atul/react-desktop/raw/master/examples/calculator/calculator_mac.png" height="400" />
 <img alt="demo_linux" src="https://github.com/master-atul/react-desktop/raw/master/examples/calculator/calculator_linux.png" height="400" />
 
+**Windows**
+
+<img alt="demo_win" src="https://github.com/master-atul/react-desktop/raw/master/examples/calculator/calculator_win.jpg" height="400" />
+
+**Mac:**
+
+<img alt="demo_mac" src="https://github.com/master-atul/react-desktop/raw/master/examples/calculator/calculator_mac.png" height="400" />
+
 To run the demo:
 
 1. `yarn build`

examples/calculator/calculator_win.jpg

@@ -2,11 +2,20 @@
 
 This example showcases how to build a basic image viewer clone.
 
-**Screenshot:**
+### Screenshots
+
+**Linux**
 
-<img alt="demo_mac" src="https://github.com/master-atul/react-desktop/raw/master/examples/image-view/image_view_mac.png" height="400" />
 <img alt="demo_linux" src="https://github.com/master-atul/react-desktop/raw/master/examples/image-view/image_view_linux.png" height="400" />
 
+**Windows**
+
+<img alt="demo_win" src="https://github.com/master-atul/react-desktop/raw/master/examples/image-view/image_view_win.jpg" height="400" />
+
+**Mac:**
+
+<img alt="demo_mac" src="https://github.com/master-atul/react-desktop/raw/master/examples/image-view/image_view_mac.png" height="400" />
+
 To run the demo:
 
 1. `yarn build`