Merge pull request #203 from swcarpentry/fix-svg

fix svg files

assets/img/swc-icon-blue.svg

 <?xml version="1.0" encoding="UTF-8"?>
-
-<svg version="1.2" baseProfile="tiny" width="30.48mm" height="23.11mm" viewBox="0 0 3048 2311" preserveAspectRatio="xMidYMid" fill-rule="evenodd" clip-path="url(#presentation_clip_path)" stroke-width="28.222" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg" xmlns:ooo="http://xml.openoffice.org/svg/export" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve">
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:ooo="http://xml.openoffice.org/svg/export" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.2" baseProfile="tiny" width="30.48mm" height="23.11mm" viewBox="0 0 3048 2311" preserveAspectRatio="xMidYMid" fill-rule="evenodd" stroke-width="28.222" stroke-linejoin="round" xml:space="preserve">
  <defs class="ClipPathGroup">
   <clipPath id="presentation_clip_path" clipPathUnits="userSpaceOnUse">
    <rect x="0" y="0" width="3048" height="2311"/>
@@ -68,4 +67,4 @@
    </g>
   </g>
  </g>
-</svg>
+</svg>
\ No newline at end of file