Restructures zsh: adds zshenv and CURRENT_OS
.zshenv errata
.zshenv errata, again...
removes unecessary .zshrc stuff
moves zsh to antigen
uname errate in .zshrc
adds japanese-daytime to .zshfn
Adds antigen submodule! now zsh works out of the box, no more oh-my-zsh cloning