Updated basics.py

-implemented scalar multiplication and division of vector class
-implemented length method in vector class
-implemented method to get unit vector in vector class
-implemented string output in vector class
-implemented equality operator in vector class
-implemented parallel method in vector class
-Changed length function in edge class as __len__ must output integers
-Began work on intersects method in edge class
-implemented parallel method in edge class
-implemented getDir method in edge class
-implemented perimeter and area methods in facet class
-implemented self.edges asset in facet class
-added some test objects at the end