I have installed magento 2 and it working.I just created the Hello world module and it working now.
My issue was I had called non existing method in execute method.
While trying to get it to work I tried to load the page it shows blank white screen, but no error.
How do I get errors to display in magento2?
Add following code in index.php file :-
error_reporting(E_ALL);
ini_set('display_errors', 1);