Steganography 2

Complete this writeup: a href="https://github.com/ctfs/write-ups-2015/tree/master/pragyan-ctf-2015/stegano/what_you_see_is_what_you_get" target="_blank"https://github.com/ctfs/write-ups-2015/tree/master/pragyan-ctf-2015/stegano/what_you_see_is_what_you_get</a>

Submit a sentence or two on what you had to do to solve this challenge and anything you struggled with understanding.