Doc: Add more screenshots to doc

docs/src/screenshots.md

@@ -5,5 +5,19 @@ will be more screenshots in the future. You could always try our demo that
 we mention on the first page of the docs.
 
 ## Home
+![Home](imgs/screenshots/home.jpg)
 
-![Home](imgs/screenshot.png)
+## Boards
+![Boards](imgs/screenshots/my_boards.jpg)
+
+## Pins
+![Pins](imgs/screenshots/my_pin.jpg)
+
+### Create Pin
+![Create Pin](imgs/screenshots/new_pin.jpg)
+
+### Pin large-view
+![Large View](imgs/screenshots/pin_detail.png)
+
+## Search/Filter
+![Home](imgs/screenshots/search.gif)