def first_season
      seasons.inject { |a, b| a.index.to_i < b.index.to_i && a.index.to_i > 0 ? a : b }
    end
def first_season
      seasons.inject { |a, b| a.index.to_i < b.index.to_i && a.index.to_i > 0 ? a : b }
    end
Selects the first season of this show that is on the Plex Server
 Does not select season 0

 @return [Season] season with the lowest index (but not 0)