changed dashboard image on readme

Author: ismcagdas

README.md

@@ -4,7 +4,7 @@ This is the documentation of [ASP.NET Zero](http://aspnetzero.com).
 
 ASP.NET Zero is a starting point for new web applications with a modern UI and solid architecture. It saves your time by providing pre-built and working pages and a strong infrastructure.
 
-![A screenshot from ASP.NET Zero](doc/images/dashboardV2.png)
+![A screenshot from ASP.NET Zero](doc/images/dashboardV3.png)
 
 * Read the documentation from the offical web site: http://aspnetzero.com/Documents