Use moar glossary

Author: tilgovi

doc/usage.rst

@@ -36,8 +36,8 @@ with :func:`~annotator.App.prototype.include`, and then run it using
 
 If you want to do something (for example, load annotations from storage) when
 the |App| has started, you can take advantage of the fact that
-:func:`~annotator.App.prototype.start` returns a Promise_. Extending our example
-above::
+:func:`~annotator.App.prototype.start` returns a :term:`Promise`. Extending our
+example above::
 
    var app = new annotator.App();
    app.include(annotator.ui.main);
@@ -58,8 +58,6 @@ familiarise yourself with what's available to you in order to make the most of
 Annotator. Next we talk about how to configure modules when you add them to your
 |App|.
 
-.. _Promise: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise
-
 
 Configuring modules
 -------------------