README: fix rand.Seed usage in examples #27
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Seed just once (not on every call to rand) by moving call to rand.Seed out of lambdas.
Use time.Now().UnixNano() instead of time.Now().UTC().UnixNano() because using UTC brings nothing to seed a random number generator
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rand.Seedout of lambdastime.Now().UnixNano()instead oftime.Now().UTC().UnixNano()as seed