title: How to I assign the ttf font file in the vfs_fonts.js?
body: <p>I am trying to add the custom fonts into vfs_fonts.js but I didn't understand what needs to be written in the value field of window.pdfMake object?</p>
  
  <p>I have my key as "MyFont.ttf" and I know that value is nothing but ttf file. My ttf is a physical file not a set of characters. How do I fill the value field?</p>
  
  <pre><code> window.pdfMake = window.pdfMake || {}; window.pdfMake.vfs = {
        "Roboto-Italic.ttf": "AAEAAAASAQAABA",
        "Roboto-Medium.ttf": "AAEAAA",
        "MyFont.ttf":"???????????????????"
      }
  </code></pre>
  
  <p>Thank you</p>