updated pt_BR translation (twitter link, cheat sheet)

index.pt_BR.html

@@ -31,7 +31,7 @@ <h1>git - guia pr&aacute;tico</h1>
         <a href="https://twitter.com/share" class="twitter-share-button" data-via="rogerdudler" data-size="large" data-url="http://rogerdudler.github.com/git-guide" data-related="rogerdudler" data-hashtags="git">Tweet</a>
         <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>
         <p class="meta">
-            por <a href="http://www.rogerdudler.com">Roger Dudler</a>
+            por <a href="http://www.twitter.com/rogerdudler">Roger Dudler</a>
             <br />creditos para <a href="http://www.twitter.com/tfnico">@tfnico</a>, <a href="http://www.twitter.com/fhd">@fhd</a> and <a href="http://www.namics.com">Namics</a><br />
             guia em <a href="index.html">ingl&ecirc;s</a>, <a href="index.fr.html">franc&ecirc;s</a>, <a href="index.it.html">italiano</a>, <a href="index.de.html">alem&atilde;o</a><br />
             por favor informe problemas em <a href="https://github.com/rogerdudler/git-guide/issues">github</a>
@@ -223,5 +223,6 @@ <h2>coment&aacute;rios</h2>
         <noscript>Por favor habilite o JavaScript para ver os <a href="http://disqus.com/?ref_noscript">coment&aacute;rios powered by Disqus.</a></noscript>
     </div>
     <a href="http://www.git-tower.com/?source=rd" onClick="recordOutboundLink(this, 'Outbound Links', 'git-tower.com');return false;" class="tower"></a>
+    <a href="files/git_cheat_sheet.pdf" onClick="recordOutboundLink(this, 'Cheat Sheet', 'git-guide');return false;" class="cheatsheet"></a>
 </body>
 </html>