added place holders for style and properties

ts/docx/document/index.ts

@@ -1,16 +1,19 @@
 import {XmlComponent, Attributes} from "../xml-components";
 import {Body} from "./body";
+import {Paragraph} from "../paragraph";
 
 export class Document {
     private document: Array<XmlComponent>;
+    private body: Body;
 
     constructor() {
         this.document = new Array<XmlComponent>();
         this.document.push(new Attributes({}));
-        this.document.push(new Body());
+        this.body = new Body();
+        this.document.push(this.body);
     }
 
-    test() {
-        return "hello";
+    addParagraph(paragraph: Paragraph) {
+        this.body.push(paragraph);
     }
 }