Minimalist Nginx error pages

A set of custom minimalist 4xx and 5xx error pages for Nginx.

Preview

Navigate into Nginx's default document directory:
```
cd /usr/share/nginx/html
```

Clone the repository:

git clone https://github.com/bartosjiri/nginx-errors.git

Add the custom error pages to the server's default configuration in /etc/nginx/sites-enabled/default file:
```
server {
...
include /usr/share/nginx/html/nginx-errors/nginx-errors.conf
}
```
Verify the configuration and reload Nginx:
```
sudo nginx -t
sudo service nginx reload
```