Add README.
Import formulae from Homebrew core.

These all had hard X11 dependencies.
atari++: add 1.72 bottle.
bochs: add 2.6.2 bottle.
clusterit: add 2.5 bottle.
curlftpfs: add 0.9.2 bottle.
cwm: update 5.5 bottle.
ddd: add 3.3.12 bottle.
dmenu: update 4.5 bottle.
dwm: update 6.0 bottle.
dzen2: add 0.8.5 bottle.
easy-tag: update 2.2.5 bottle.
feh: add 2.12 bottle.
fox: add 1.6.49 bottle.
freeglut: add 2.8.1 bottle.
freerdp: update 1.0.2 bottle.
fsv: add 0.9.1 bottle.
geany: add 1.24.1 bottle.
geda-gaf: add 1.8.2 bottle.
geeqie: add 1.1 bottle.