adds missing circle center in and out

Author: Adam Argyle

app/index.html

@@ -30,12 +30,14 @@ <h1>
 
       <select>
         <optgroup label="Circle Entrances">
+          <option>in:circle:center</option>
           <option>in:circle:top-right</option>
           <option selected>in:circle:top-left</option>
           <option>in:circle:bottom-right</option>
           <option>in:circle:bottom-left</option>
         </optgroup>
         <optgroup label="Circle Exits">
+          <option>out:circle:center</option>
           <option>out:circle:top-right</option>
           <option>out:circle:top-left</option>
           <option>out:circle:bottom-right</option>
@@ -88,12 +90,14 @@ <h1>
       <h3>Circles</h3>
       <dl>
         <dt>Entrances</dt>
+        <dd><a href="#">in:circle:center</a></dd>
         <dd><a href="#">in:circle:top-right</a></dd>
         <dd selected><a href="#" autofocus>in:circle:top-left</a></dd>
         <dd><a href="#">in:circle:bottom-right</a></dd>
         <dd><a href="#">in:circle:bottom-left</a></dd>
 
         <dt>Exits</dt>
+        <dd><a href="#">out:circle:center</a></dd>
         <dd><a href="#">out:circle:top-right</a></dd>
         <dd><a href="#">out:circle:top-left</a></dd>
         <dd><a href="#">out:circle:bottom-right</a></dd>