requirements.txt

1. Support two players
    + red and blue links
		+ red and blue routes

2. Route changes
    + red routes can use red and uncolored links
		+ blue routes can use blue and uncolored links
		+ uncolored routes can only use uncolored links

3. Handle improper input
    + output line with an error
		+ too many tokens
		+ too few tokens
		+ player colors other than red or blue
		+ invalid distance

4. Add Unit tests for any new classes

Bonus:  
    Learn about Factory pattern
    Implement factory pattern for links

Add a factory
    + Builds links given the input
    + Allows easy addition of new links
		+ Separate link and factory classes

Extensions designed 10% (UML diagram)
Extensions implemented 20%
Extensions tested 20%
Refactorings described (4) 10%
Refactorings implemented (2) 10%
Code Clarity 10%
Document Clarity 10%
Factory 10% Bonus