Add more precise footer

Author: vgvassilev

_includes/footer.html

@@ -9,7 +9,7 @@
 
         <div class="col-sm-9" align="center">
           <p>
-            We are part of the
+            We are partially funded by the
             <a href="https://phy.princeton.edu/" target="_blank">
               Princeton Department of Physics
             </a>