Create a new site directory and init Yass

def create_site(sitename):
    """Create a new site directory and init Yass"""
    sitepath = os.path.join(CWD, sitename)
    if os.path.isdir(sitepath):
        print("Site directory '%s' exists already!" % sitename)
    else:
        print("Creating site: %s..." % sitename)
        os.makedirs(sitepath)
        copy_resource("skel/", sitepath)
        stamp_yass_current_version(sitepath)
        print("Site created successfully!")
        print("CD into '%s' and run 'yass serve' to view the site" % sitename)

    footer()