Source: David Berding / Getty Olivia Miles is making this WNBA transition look a little too easy. Every rookie is supposed to have an adjustment period — the speed, the physicality, the scouting reports, the pressure of being a top pick — but Miles has stepped into Minnesota and played like she’s been here before. Through the first month of the season, she’s averaging around 15 points, five rebounds and more than five assists per game, while giv…