format INSTALL file
remove the 'download media' section from INSTALL
Merge branch 'install-reformat' of https://github.com/wesleywerner/dungeons into wesleywerner-install-reformat

Conflicts:
	INSTALL
:
:
rm install and replace with INSTALL.md
Merge branch 'master' of https://github.com/DebianJoe/dungeons
rm install and add INSTALL.md