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This week's Ruby Quiz is to create a tool that will allow you to preview an
image file at the command-line in pure text.

Your program will need to read in an image, in whatever format you want to
support, and respond with a text representation of the image that fits in the
terminal.

For example, given the image:

	http://rubyquiz.com/images/Ducky.png

Your program might respond with something like:

	........--**####**::::::::::::........
	......--##oooooo\\**::::::::..........
	......**oo==oooo\\\\::::..............
	....--\\oooooooo\\$$**::..............
	....**&&$$oooo\\$$$$%%................
	....**\\oooo\\<<<<$$##................
	....!!<<<<<<<<<<\\\\##..........::::::
	....::%%<<<<<<<<\\$$^^....::**++**....
	....^^%%<<<<<<<<$$$$##**""==++++==****
	....**oo<<<<<<$$<<<<\\oo==++++++==""""
	..!!==oo<<<<<<<<$$$$oo====++++==oo####
	^^====oo\\<<$$\\oooooo==++======oo****
	**++++====oooo====++++======oooo\\^^^^
	++====++++========++======oooooo**....
	""====++++==========oooooooooo##--....
	""==================oooooooooo^^......
	!!oo==oo======oooooooooo\\##^^::......
	..""oooooooooooooooo\\oo""^^..........
	..::**====oooooooooo==**::............
	....::^^**""""""""!!..--::............
	....::^^**""""""""!!..--::............

Go for as much accuracy as you can possibly squeeze out of it.