Added uptake logo (#39)

Author: terrytangyuan

img/logo/uptake-logo.png

@@ -146,6 +146,8 @@ <h2>Acknowledgment</h2>
         <img height="70px" src="https://upload.wikimedia.org/wikipedia/en/thumb/2/2e/McGill_Wordmark.svg/640px-McGill_Wordmark.svg.png">
         &nbsp;
         <img height="110px" src="img/logo/um-logo.png">
+        <img height="30px" src="img/logo/uptake-logo.png">
+        &nbsp;
     </div>
   </div>
     <br>