added initialize methods for Card and Deck classes and passed tests
added tests for Deck initalize, create_52_card_deck, and deal_card.  All tests passed
added test for shuffle and created method that passed the test
created initialize test for War class
added play_game method for War class
added play_round and complete_game methods for War class
all methods and tests working correctly
Finished war project with ties
added linked list implementation to war.rb
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