This is a wrapper for ImageMagick's mogify utility
Modify an image in-place for faster performance
iex> image = Mogrify.new("path/to/image.png")
iex> image = Mogrify.resize(image, "50x50")
iex> IO.puts image.path
You can also create a copy of the image if you don't want to overwrite
the original by opening file using Mogrify.open/1
iex> image = Mogrify.open("path/to/image.png")
iex> image = Mogrify.resize(image, "50x50")
iex> IO.puts image.path