marked error_screen as a protected module, added --dev launch option

pocket_friends/surfaces/error_screen.py

@@ -1,28 +0,0 @@
-import pygame
-from pocket_friends.elements import surface
-
-
-class Surface(surface.GameSurface):
-    def __init__(self, game_res, resources_dir, game_fps, **kwargs):
-        super().__init__(game_res, resources_dir, game_fps)
-        self.frames = 1
-        self.game_fps = game_fps
-        self.delay = 1
-        self.font = pygame.font.Font(resources_dir + '/fonts/5Pts5.ttf', 10)
-        self.title = pygame.image.load(resources_dir + '/images/debug/invalid.png').convert_alpha()
-        self.next_surface = 'title'
-
-    def update(self):
-        self.preprocess()
-
-        self.blit(self.title, (0, -4))
-        text = self.font.render('Frames: {0}'.format(self.frames), False, (64, 64, 64))
-        self.blit(text, (3, 68))
-
-        self.frames += 1
-        self.frames %= self.game_fps
-
-        for event in pygame.event.get():
-            if event.type == pygame.KEYDOWN:
-                if event.key == pygame.K_b:
-                    self.running = False