added additional_links config

README.md

 `conf.json.example` to `conf.json`). These are:
 
 	{
-		"tmpdir": String. The directory to store temporary files in. Default: "tmp"
-		"subtitles": String (or false). The language code for the subtitles, or false for no subtitles. Default: "en" (english).
+		"tmpdir": String. The directory to store temporary files in.
+			Default: "tmp"
+
+		"subtitles": String (or false). The language code for the subtitles,
+			or false for no subtitles. Default: "en" (english).
+
+		"additional_links": Array of objects which look like this:
+			{ "name": "some name", "url": "some URL" }
+			Lets you add more parts to the index page. I use it to link to an
+			instance of guacamole, a web based VNC client.
+			( https://guacamole.incubator.apache.org/ )
 	}

conf.json.example

 {
 	"tmpdir": "tmp",
-	"subtitles": "en"
+	"subtitles": "en",
+	"additional_links": []
 }

server.js

 		});
 	});
 });
+
+app.get("/additional-links", (req, res) => {
+	res.json(conf.additional_links);
+});

web/index.html

 		</div>
 
 		<script src="/webstuff.js"></script>
+		<script src="/script.js"></script>
 	</body>
 </html>

web/script.js

+get("/additional-links", function(err, res) {
+	if (err)
+		return console.trace(err);
+
+	JSON.parse(res).forEach(function(link) {
+		var form = document.createElement("form");
+		form.className = "part";
+		form.method = "get";
+		form.action = link.url;
+
+		var btn = document.createElement("button");
+		btn.className = "link";
+		btn.innerHTML = link.name;
+		form.appendChild(btn);
+
+		$$("#parts").appendChild(form);
+	});
+});

web/style.css

 #parts .part input {
 	width: calc(100% - 80px);
 }
+#parts .part input[type=url],
+#parts .part input[type=text] {
+	padding-left: 6px;
+}
+
 #parts .part button {
 	width: 75px;
 	float: right;
 }
 
+#parts .part button.link {
+	width: 100%;
+	height: 42px;
+	float: none;
+}
+
 #parts .part input,
 #parts .part button {
-	height: 28px;
+	height: 34px;
+	line-height: 0px;
 }