Modified Point init to accept a tuple of coordinates as well, for easy...

Modified Point init to accept a tuple of coordinates as well, for easy testing. Should be backwards compatible.

src/Point.py

 class Point:
-    def __init__(self, corner):
+    def __init__(self, corner = None, coordinates = None):
+        if corner != None:
             self.x = corner.getAttribute("x")
             self.y = corner.getAttribute("y")
+        elif coordinates != None:
+            self.x = coordinates[0]
+            self.y = coordinates[1]