Increased image size

The previous scale of drawing (plot) was good to have code and plot
side-by-side in Spyder IDE. The size stopped being enough when I created
an animation. It was small and the quality was poor. Here I doubled the size
and increased the font's size.

MazeDrawer.py

@@ -46,9 +46,11 @@ def __clearLine(self, x1, y1, x2, y2):
 
 
   def __drawBackground(self, ratio):
-    scale = max(self.__size_x, self.__size_y) / ratio
+    scale = max(self.__size_x, self.__size_y) / ratio / 2
     pyplot.figure(figsize=(self.__size_x / scale, self.__size_y / scale))
 
+    pyplot.rcParams['font.size'] = 20
+
     #pyplot.xticks([])
     #pyplot.yticks([])
     pyplot.style.use('dark_background')