Using a better demo naming system

demo/30-template-document.ts

@@ -0,0 +1,31 @@
+// Example on how to use a template document
+// Import from 'docx' rather than '../build' if you install from npm
+import * as fs from "fs";
+import { Document, ImportDotx, Packer, Paragraph } from "../build";
+
+const importDotx = new ImportDotx();
+const filePath = "./demo/dotx/template.dotx";
+
+fs.readFile(filePath, (err, data) => {
+    if (err) {
+        throw new Error(`Failed to read file ${filePath}.`);
+    }
+
+    importDotx.extract(data).then((templateDocument) => {
+        const doc = new Document(undefined, {
+            template: templateDocument,
+        });
+
+        doc.addSection({
+            properties: {
+                titlePage: templateDocument.titlePageIsDefined,
+            },
+            children: [new Paragraph("Hello World")],
+        });
+
+        const packer = new Packer();
+        packer.toBuffer(doc).then((buffer) => {
+            fs.writeFileSync("My Document.docx", buffer);
+        });
+    });
+});