Updated readme

readme.md

@@ -1,5 +1,14 @@
 # Cascade
 
+![icon](assets/images/icon.png)
+
 A Markup Cascading Printing software
 
-![screenshot](screenshot.png)
+##Design Stack
+![Design Stack](assets/images/Screenshot_stackdesign.png)
+
+##Contents Stack
+![Contents Stack](assets/images/Screenshot_stackcontents.png)
+
+##Mockups
+![mockups](assets/images/mockups.png)