Updated license to zlib/libpng and made it a markdown file
Not sure why this hasn't been removed before!
Updated MINX License to zlib/libpng!
Updated LICESNSE parts to actually mention MINX
Removed LICENSE-Header file, because now the entire licesne can be the header for each file
Updated LICENSE text to display MINX as header
Merge pull request #77 from liam-middlebrook/master

Updated License to zlib/libpng