title: Force browser to open file instead of prompting download
body: <p>When clicking a PDF link in Firefox and Chrome, the file will sometimes be opened for in-browser viewing and sometimes prompt a "Save as" dialog.</p>
  
  <p>If I wanted to force the link to always prompt a download I could use the <strong>download</strong> HTML5 attribute.</p>
  
  <p>However, I want to do the opposite. I.e., <strong>force the links to always be viewed in the browser</strong>.</p>
  
  <p>Sort of an inverse <strong>download</strong> attribute. Is there such a thing? :)</p>
  
  <p>I'd prefer to not modify response headers when serving PDF documents - I want to be able to specify in markup what the browser behavior should be.</p>
  
  <p>Thanks!</p>