Merge pull request #8 from kattni/folder-fix

Fix for specifing image lib

Author: caternuson

adafruit_slideshow.py

@@ -173,7 +173,8 @@ def __init__(self, display, backlight_pwm, *, folder="/", order=PlayBackOrder.AL
 
         # Load the image names before setting order so they can be reordered.
         self._img_start = None
-        self._file_list = list(filter(lambda x: x.endswith("bmp"), os.listdir(folder)))
+        self._file_list = [folder+"/"+f for f in os.listdir(folder) if (f.endswith(".bmp")
+                                                                        and not f.startswith("."))]
 
         self._order = None
         self.order = order