Merge pull request #269 from hjiang/pr-image-file

add an `image_file` driver for development

inkycal/display/drivers/image_file.py

@@ -0,0 +1,17 @@
+# Display resolution
+EPD_WIDTH       = 800
+EPD_HEIGHT      = 480
+
+class EPD:
+    def init(self):
+        pass
+
+    def display(self, image):
+        image.save('display_image.png')
+
+    def getbuffer(self, image):
+        image.save('getbuffer_image.png')
+        return image
+
+    def sleep(self):
+        pass