title: How to add "Share" action to feed dialog?
body: <p>Does anyone know how to make the "Share" option appear next to the "Like" and "Comment" actions in posts generated through the feed dialog?</p>
  
  <p>I can see that the "actions" property might support this, but I don't see any "share" dialog that could be plugged into the link (and the "send" dialog only sends private messages).</p>
  
  <p>What I am looking for is a way to generate a standard Facebook "share" link (with full public/private sharing options) as an "action" property.</p>
  
  <p>Here is our current feed dialog code:</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;a href='https://www.facebook.com/dialog/feed?app_id=126736467765&amp;
  link=https://apps.facebook.com/karmalyze/?reqtype=action%26actno=$actno&amp;
  picture=$post_pict&amp;caption=karmalyze...%20your%20life!&amp;name=$share_act_title&amp;
  description=$share_act_description&amp;message=Yummy%20Karma!&amp;
  redirect_uri=https://apps.facebook.com/karmalyze/?reqtype=action%26actno=$actno' 
  title='Share This'&gt;&lt;img class='vmidimage floatright' src='images/icon_kk_fb.png' alt='Like Icon' /&gt;&lt;/a&gt;
  </code></pre>
  
  <p>I see the "Share" option on many posts. Is this just for posts that Facebook generates, or has someone cracked this code for the rest of us? Thanks!</p>