How to access ProjectWebApp site without define directory in Url

I am working on SSL configuration on PWA(ProjectWebApp)site with SQL Server 2008 and SharePoint 2013.Whenever someone wants to access it, need to put /PWA (http://servername/pwa ) explicitly in URL. But we want to access it as http://servername, means whenever we put this link, it should redirect to /PWA automatically.

I also want to access this site as Secure Site, and also did the changes with ref: http://ift.tt/XQ8h7q But it not worked, after followed all the steps my site show blank page.