message: updated src to local for beta
diff: <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <meta name="author" content="https://github.com/gitbrent">
  <meta name="website" content="https://github.com/gitbrent/PptxGenJS/">
  - <meta name="version" content="3.1.1">
  - <meta name="updated" content="2020-02-02">
  + <meta name="version" content="3.2.0">
  + <meta name="updated" content="2020-02-04">
  <link rel="icon" href="images/favicon-32x32.png" sizes="32x32" type="image/png">
  <link rel="icon" href="images/favicon-16x16.png" sizes="16x16" type="image/png">
  <link rel="icon" href="images/favicon.png">
  <script src="https://cdn.jsdelivr.net/gh/gitbrent/pptxgenjs@latest/examples/images/base64Images.js" async></script>
  <!-- RELEASE (CDN)
  - -->
  <script src="https://cdn.jsdelivr.net/gh/gitbrent/pptxgenjs@latest/dist/pptxgen.bundle.js"></script>
  <script src="https://cdn.jsdelivr.net/gh/gitbrent/pptxgenjs@latest/demos/common/demos.js"></script>
  + -->
  <!--
  TODO: [only used during `-beta` dev cycles; update to below on release]
  <script src="https://cdn.jsdelivr.net/gh/gitbrent/pptxgenjs@master/dist/pptxgen.bundle.js"></script>
  <!-- LOCAL TESTING:
  <script src="../../libs/jszip.min.js"></script>
  <script src="../../dist/pptxgen.min.js"></script>
  + -->
  <script src="../../dist/pptxgen.bundle.js"></script>
  <script src="../common/demos.js"></script>
  - -->
  <script>
  // ==================================================================================================================
  