message: Simplified example code, minor verbiage updates
diff: <!-- START doctoc generated TOC please keep comment here to allow auto update -->
  <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
  -
  - [Introduction](#introduction)
  - [Features](#features)
  - [Live Demo](#live-demo)
  @@ -46,17 +45,17 @@ This library creates Open Office XML (OOXML) Presentations which are compatible
  # Features
  -**Extensive browser support**
  +**Extensive Support**
  -- Create/download presentations on all current desktop & mobile web browsers
  +- Generate presentations on every modern desktop & mobile web browser
  - IE11 is supported via bundle polyfill
  -**Major PowerPoint object types**
  +**Comprehensive Objects**
  -- Slides can include Charts, Images, Media, Shapes, Tables, Text and more
  +- Create any object type: Charts, Images, Links, Media, Shapes, Tables, Text
  - SVG images and YouTube videos are supported when viewed in PowerPoint online/2019+ desktop application
  -**Modern architecture**
  +**Modern Architecture**
  - Supports client web browsers, NodeJS, and React/Angular/Electron
  - Export methods return promises
  @@ -152,7 +151,7 @@ let slide = pres.addSlide();
  // 3. Add one or more objects (Tables, Shapes, Images, Text and Media) to the Slide
  let textboxText = "Hello World from PptxGenJS!";
  -let textboxOpts = { x: 1, y: 1, color: "363636", fill: "f1f1f1", align: pres.AlignH.center };
  +let textboxOpts = { x: 1, y: 1, color: "363636" };
  slide.addText(textboxText, textboxOpts);
  // 4. Save the Presentation
  @@ -170,7 +169,7 @@ let slide = pres.addSlide();
  // 3. Add one or more objects (Tables, Shapes, Images, Text and Media) to the Slide
  let textboxText = "Hello World from PptxGenJS!";
  -let textboxOpts = { x: 1, y: 1, color: "363636", fill: "f1f1f1", align: "center" };
  +let textboxOpts = { x: 1, y: 1, color: "363636" };
  slide.addText(textboxText, textboxOpts);
  // 4. Save the Presentation
  