title: Jest Snapshots fail on SVG props
body: <p>Jest snapshot test fail when including Fontawesome-React icon components.
  I don't pass a <code>title</code> or <code>aria-labelledby</code> to the SVG components, and even when I do pass it those props, the snapshot continues to hash the props. Tests fail to pass since a new hash is generated in those two props every time the tests run.</p>
  
  <p><code>"@fortawesome/react-fontawesome": "^0.1.4",</code></p>
  
  <p><code>"jest": "^23.6.0",</code></p>
  
  <pre><code>        &lt;svg
      -     aria-labelledby="svg-inline--fa-title-y4Cv9dkIlhtu"
      +     aria-labelledby="svg-inline--fa-title-gIn5ZJBsxixz"
            className="svg-inline--fa fa-user-circle fa-w-16 fa-1x "
            color="whitesmoke"
            data-css-knsav2=""
            data-icon="user-circle"
            data-prefix="fas"
      @@ -23,11 +23,11 @@
            }
            viewBox="0 0 496 512"
            xmlns="http://www.w3.org/2000/svg"
          &gt;
            &lt;title
      -       id="svg-inline--fa-title-y4Cv9dkIlhtu"
      +       id="svg-inline--fa-title-gIn5ZJBsxixz"
              style={Object {}}
            &gt;
              User Profile
            &lt;/title&gt;
  </code></pre>