Merge pull request #521 from nodejs/new-logo

Use new logo on website.

Author: stevemao

layouts/css/page-modules/_header.styl

@@ -70,5 +70,7 @@ header
 
     img
         display block
-        margin .5em auto 1em auto
+        margin .5em auto 0 auto
         border none
+        max-height 75px 
+        max-width 180px

layouts/partials/header.hbs

@@ -2,7 +2,7 @@
     <div class="container">
 
         <a href="/{{site.locale}}" id="logo">
-          <img src="/static/images/logo.svg" height="75" width="180" alt="node.js">
+          <img src="/static/images/logos/nodejs-new-white-pantone.png" alt="node.js">
         </a>
         <nav>
             <ul class="list-divider-pipe">