FIX: compile issues in BSD (gmake)

FIX: readme.md description extended.

FIX: readme description added dependencies

FIX: updated to v1.0.2-12 applying patches from FreeBSD ports, Debian and Gentoo.

FIX: updated base README

NEW: commit the source from http://www.complang.tuwien.ac.at/schani/metapixel/

Initial commit