Imporove user feedback during startup

Now the eyes go to a khaki color and "< < < LOADING < < <" displays
during the skill startup.  When Padatious finishes the first training
we now emit a "mycroft.ready" on the messagebus.

A change to the skill_mark_1 to look for "mycroft.ready" instead of
"mycroft.skills.initialized" provides a good visual change to show that
it is ready for use.

mycroft/res/text/en-us/message_loading.skills.dialog

@@ -0,0 +1 @@
+< < < LOADING < < <

mycroft/skills/__main__.py

@@ -151,6 +151,9 @@ def check_connection():
             bus.emit(Message("enclosure.mouth.reset"))
             time.sleep(0.5)
 
+        enclosure.eyes_color(189, 183, 107)  # dark khaki
+        enclosure.mouth_text(dialog.get("message_loading.skills"))
+
         bus.emit(Message('mycroft.internet.connected'))
         # check for pairing, if not automatically start pairing
         try:

mycroft/skills/padatious_service.py

@@ -77,7 +77,10 @@ def train(self, message=None):
         LOG.info('Training complete.')
 
         self.finished_training_event.set()
-        self.finished_initial_train = True
+        if not self.finished_initial_train:
+            LOG.info("Mycroft is all loaded and ready to roll!")
+            self.bus.emit(Message('mycroft.ready'))
+            self.finished_initial_train = True
 
     def wait_and_train(self):
         if not self.finished_initial_train:

mycroft/skills/skill_manager.py

@@ -412,6 +412,7 @@ def run(self):
                         skill_path, repr(e)))
             if not has_loaded and not still_loading and len(skill_paths) > 0:
                 has_loaded = True
+                LOG.info("Skills all loaded!")
                 self.bus.emit(Message('mycroft.skills.initialized'))
 
             self._unload_removed(skill_paths)