Cataclysm updated to 0.A (binary)

I rewrote the formula to download and install Cataclysm 0.A, the latest stable version from the 4th of march 2014.

The formula downloads the Mac OS binary (that wasn't there before 0.A) instead of compiling (because I'm not good enough with ruby to write a formula that compiles) but it works well. The version is the curses version (not SDL) and it can be run with the command `cataclysm` from the command line.