Add "id" attribute to parsed glossary entries

lib/parse/glossary.js

@@ -33,9 +33,15 @@ function parseGlossary(src) {
         // Simplify each group to a simple object with name/description
         return {
             name: pair[0].text,
+            id: entryId(pair[0].text),
             description: pair[1].text,
         };
     });
 }
 
+// Normalizes a glossary entry's name to create an ID
+function entryId(name) {
+    return name.toLowercase();
+}
+
 module.exports = parseGlossary;