Undasherize the namespace when no event exists

This would present the new-window event as "New Window"
instead of "New-window".

src/stdlib/underscore-extensions.coffee

@@ -62,7 +62,7 @@ _.mixin
 
   humanizeEventName: (eventName, eventDoc) ->
     [namespace, event]  = eventName.split(':')
-    return _.capitalize(namespace) unless event?
+    return _.undasherize(namespace) unless event?
 
     namespaceDoc = _.undasherize(namespace)
     eventDoc ?= _.undasherize(event)