Merge pull request #1 from vdv73rus/retina_logo

Change logo from raster to vector.

Author: Rakhim Davletkaliyev

index.html

@@ -50,7 +50,7 @@
         <div class="hero-unit">
             <a href="https://hexlet.io/games?utm_source=codebattle&utm_medium=logo&utm_campaign=codebattle_landing">
               <div class="logo_holder">
-                <img src="startup/common-files/img/code_battle_logo.png"</img>
+                <img src="startup/common-files/img/code_battle_logo.svg" width="170" height="250">
               </div>
             </a>
             <div class="fui-cmd"></div>