Update nginx.yml to use sites-available

Update nginx.yml to use `sites-available`/`sites-enabled` structure in line with how Debian/Ubuntu have it setup.
Update nginx.conf.j2

Allows Nginx to pass throught `.crumb` header.
Merge pull request #12 from mxxcon/patch-1

Update nginx.yml to use sites-available
Merge pull request #13 from mxxcon/nginx_

Update nginx.conf.j2
update contributors
Fix README
Bump version: 1.3.4 → 1.3.5
Merge branch 'develop'