Update the main page to reflect current Flexbox support status

This also improves grammar a bit.

index.html

@@ -7,8 +7,8 @@
     <h2 class="Section-heading">Introduction</h2>
     <p>CSS has been lacking proper layout mechanisms for far too long. Transitions, animations, filters, all of these are great and useful additions to the language, but they don't address the major problems that Web developers have been complaining about for what seems like an eternity.</p>
     <p>Finally, thanks to <a href="http://www.w3.org/TR/css3-flexbox/">Flexbox</a>, we have a solution.</p>
-    <p>This site is not another CSS framework. Instead, its purpose is to showcase problems once hard or impossible to solve with CSS alone, now made trivially easy with Flexbox. And with the recent release of Internet Explorer 11 and Safari 6.1, the latest Flexbox spec is now supported in every modern browser.</p>
-    <p>Check out the demos below. View the styles in the Web inspector or dive into <a href="https://github.com/philipwalton/solved-by-flexbox">the source</a> to see just how easy CSS layout will become once Flexbox becomes mainstream.</p>
+    <p>This site is not another CSS framework. Instead, its purpose is to showcase problems once hard or impossible to solve with CSS alone, now made trivially easy with Flexbox. With the release of Internet Explorer 11 and Safari 6.1, the latest Flexbox spec is now supported in every modern browser.</p>
+    <p>Check out the demos below. View the styles in the Web inspector or dive into <a href="https://github.com/philipwalton/solved-by-flexbox">the source</a> to see just how easy CSS layout becomes with Flexbox.</p>
   </div>
 </section>
 
@@ -79,8 +79,6 @@ <h2 class="Section-heading">Browser Support</h2>
     <h3 class="Section-heading">Caveats and Known Issues</h3>
     <ul class="Section-list">
       <li>IE 10 has Flexbox support but for a <a href="http://www.w3.org/TR/2012/WD-css3-flexbox-20120322/">draft version</a> of the current spec: (<code>display:flexbox</code>).</li>
-      <li>Safari 6 and earlier support the <a href="http://www.w3.org/TR/2009/WD-css3-flexbox-20090723/">original</a> Flexbox syntax, which is now obsolete: (<code>display:box</code>).</li>
-      <li>Firefox 27 and earlier do not support multi-line flexboxes. See <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=702508">this bug</a> for more details.</li>
       <li>For a full browser support comparison, check out <a href="http://caniuse.com/flexbox">caniuse.com/flexbox</a></li>
     </ul>
   </div>
@@ -105,6 +103,6 @@ <h2 class="Section-heading">Translations</h2>
       <li><a href="http://hashrock.github.io/solved-by-flexbox-ja/">Japanese</a></li>
       <li><a href="https://hyunseob.github.io/solved-by-flexbox-kr/">Korean</a></li>
     </ul>
-    <p>Please note that translations are unofficial and may be inaccurate or out of date. To submit your own translation, please submit a <a href="https://github.com/philipwalton/solved-by-flexbox/pull/new/master" class="rich-diff-level-one">pull request</a> or <a href="https://github.com/philipwalton/solved-by-flexbox/issues/new" class="rich-diff-level-one">open an issue</a> on Github and link to your translated content.</p>
+    <p>Please note that translations are unofficial and may be inaccurate or out of date. To submit your own translation, please submit a <a href="https://github.com/philipwalton/solved-by-flexbox/pull/new/master" class="rich-diff-level-one">pull request</a> or <a href="https://github.com/philipwalton/solved-by-flexbox/issues/new" class="rich-diff-level-one">open an issue</a> on GitHub and link to your translated content.</p>
   </div>
 </section>