Update nim-game.md

lightningtgc · lightningtgc · commit 431de78babda · 2015-10-15T23:31:29.000-06:00
diff --git a/leetcode/nim-game.md b/leetcode/nim-game.md
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+You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remove the stones.
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+Both of you are very clever and have optimal strategies for the game. Write a function to determine whether you can win the game given the number of stones in the heap.
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+For example, if there are 4 stones in the heap, then you will never win the game: no matter 1, 2, or 3 stones you remove, the last stone will always be removed by your friend.
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