Using a better demo naming system

demo/13-xml-styles.ts

@@ -0,0 +1,34 @@
+// This example shows 3 styles using XML styles
+// Import from 'docx' rather than '../build' if you install from npm
+import * as fs from "fs";
+import { Document, HeadingLevel, Packer, Paragraph } from "../build";
+
+const styles = fs.readFileSync("./demo/assets/custom-styles.xml", "utf-8");
+const doc = new Document({
+    title: "Title",
+    externalStyles: styles,
+});
+
+doc.addSection({
+    children: [
+        new Paragraph({
+            text: "Cool Heading Text",
+            heading: HeadingLevel.HEADING_1,
+        }),
+        new Paragraph({
+            text: 'This is a custom named style from the template "MyFancyStyle"',
+            style: "MyFancyStyle",
+        }),
+        new Paragraph("Some normal text"),
+        new Paragraph({
+            text: "MyFancyStyle again",
+            style: "MyFancyStyle",
+        }),
+    ],
+});
+
+const packer = new Packer();
+
+packer.toBuffer(doc).then((buffer) => {
+    fs.writeFileSync("My Document.docx", buffer);
+});