Document the TTS functionality a bit

kayleevc/plugins/pluginbase.py

@@ -40,6 +40,8 @@ class PluginBase(GObject.Object):
         This method must return True if the command was handled by the plugin,
         and False otherwise.  As soon as it has been determined that the
         command will be handled, this method must emit a ``processed`` signal
-        with ``text`` as its parameter.
+        with ``text`` as its parameter.  If the plugin wants to speak some
+        words to the user, it can do so by emitting a ``tts`` signal with the
+        words to be spoken as its parameter.
         """
         return False

kayleevc/plugins/simple.py

@@ -24,7 +24,7 @@ class Plugin(PluginBase):
         self.corpus_strings.add(self.options['phrase'])
 
     def recognizer_finished(self, recognizer, text):
-        """Print the phrase when it is spoken"""
+        """Print and speak the phrase when it is heard"""
         # Is there a matching command?
         if text == self.options['phrase']:
             self.emit('processed', text)