Kin: A Real People’s History of Our Nation by Nick Brodie Hardie Grant, 2015, 370 pages, $29.95   Nick Brodie, in Kin, has attempted, generally successfully, to tell the history of Australia through its mostly unsung “average Australians” with an extended history of his own family dating back more than two hundred years. The nearest he comes to fame among his forebears is a candidate for the “real” Man from Snowy River. But over a dozen generations their life, times and sometimes faces are there as convicts, farmers, station workers, an Aborigine, a coach driver, butchers and bakers, nurses, teachers,…