Merge pull request #1135 from ember-learn/update-polaris-editions-picture

Replaces canary with our amazing polaris mascots

Author: mansona

app/templates/editions/index.hbs

@@ -30,7 +30,7 @@
     <li>
       <LinkTo @route="editions.polaris">
         <div class="well p-5">
-          <img src="/images/tomsters/1-canary.png" alt="" role="presentation">
+          <img src="/images/tomsters/polaris.png" alt="" role="presentation">
         </div>
         Polaris
       </LinkTo>