use png for logo

server/views/partials/header.hbs

@@ -1,7 +1,7 @@
 <header>
   <div class="logo-wrapper">
     <a class="logo nav" href="/" title="Homepage">
-      <img src="/images/logo.svg" alt="kutt" width="18" height="24" />
+      <img src="/images/logo.png" alt="kutt" width="18" height="24" />
       {{site_name}}
     </a>
     <ul class="logo-links">