sfx-path existence check

README

@@ -9,7 +9,7 @@ Example
 =======
 
 Save and run the following script to create a project that redraws a square at a
-random location every second.  This script may also be found in the `sample.py`
+random location every second.  This script is also written in the `sample.py`
 file.
 
 from time import sleep

pgfw/Audio.py

@@ -21,8 +21,9 @@ class Audio(GameChild):
         fx = {}
         if self.get_configuration().has_option("audio", "sfx-path"):
             root = self.get_resource("audio", "sfx-path")
-            for name in listdir(root):
-                fx[name.split(".")[0]] = Sound(join(root, name))
+            if root:
+                for name in listdir(root):
+                    fx[name.split(".")[0]] = Sound(join(root, name))
         self.fx = fx
 
     def mute(self, event):

pgfw/Display.py

@@ -15,7 +15,6 @@ class Display(GameChild):
 
     def set_screen(self, flags=0):
         self.screen = display.set_mode(self.config["dimensions"], flags)
-        # robot spaceman ninja ranger
 
     def set_caption(self):
         display.set_caption(self.config["caption"])