Minor leaderboard example simplification. Replaced {{#unless}} with {{else}}.

examples/leaderboard/leaderboard.html

@@ -20,11 +20,9 @@
     <div class="name">{{selected_name}}</div>
     <input type="button" class="inc" value="Give 5 points" />
   </div>
-  {{/if}}
-
-  {{#unless selected_name}}
+  {{else}}
   <div class="none">Click a player to select</div>
-  {{/unless}}
+  {{/if}}
 </template>
 
 <template name="player">