nginx samples sites for multiple projects

- add `project-1.conf` and `project-1.conf` to match the docs.
- keep default to work with both multiple and single projects.
- delete the .gitignore.
- update docker-compose and example-env file to match the new settings
- update the docs
- delete `laravel-https.conf` to replace it with documentation instead

env-example

@@ -1,6 +1,5 @@
 ### Application
 # Point to your application code, wish should be available at `/var/www`
-APPLICATION_1=../
 
 ### PHP version (Does not apply for HHVM)
 # PHP_VERSION=55