Not only is he making this journey, but he is recording it every step of the way on his YouTube channel and is now up to episode #318(linked above). Recently his "Far Lands or Bust" project was featured in an article for the New Yorker and I seriously recommend you read it.
"On March 28, 2011, a man who calls himself Kurt J. Mac loaded a new game of Minecraft. As the landscape filled in around his character, Mac surveyed the blocky, pixellated trees, the cloud-draped, mountains, and the waddling sheep. Then he started walking. His goal for the day was simple: to reach the end of the universe.
Nearly three years later, Mac, who is now thirty-one, is still walking. He has trekked more than seven hundred virtual kilometres in a hundred and eighty hours. At his current pace, Mac will not reach the edge of the world, which is now nearly twelve thousand kilometres away, for another twenty-two years."