Additional doc/updates

docs/web_server.md

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+# Web Server
+ENiGMA½ comes with a built in *content server* for supporting both HTTP and HTTPS. Currently the [File Bases](file_base.md) registeres routes for file downloads, and static files can also be served for your BBS. Other features will likely come in the future or you can easily write your own!
+
+## Configuration
+By default the web server is not enabled. To enable it, you will need to at a minimum configure two keys in the `contentServers::web` section of `config.hjson`:
+
+```hjson
+contentServers: {
+	web: {
+		domain: bbs.yourdomain.com
+
+		http: {
+			enabled: true
+		}
+	}
+}
+```
+
+This will configure HTTP for port 8080 (override with `port`). To additionally enable HTTPS, you will need a PEM encoded SSL certificate and private key. Once obtained, simply enable the HTTPS server:
+```hjson
+contentServers: {
+	web: {
+		domain: bbs.yourdomain.com
+
+		https: {
+			enabled: true
+			port: 8443
+			certPem: /path/to/your/cert.pem
+			keyPem: /path/to/your/cert_private_key.pem
+		}
+	}
+}
+```
+
+### Static Routes
+Static files live relative to the `contentServers::web::staticRoot` path which defaults to `enigma-bbs/www`. 
+
+### Custom Error Pages
+Customized error pages can be created for [HTTP error codes](https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#4xx_Client_Error) by providing a `<error_code>.html` file in the *static routes* area. For example: `404.html`.