add lucius color scheme
Reset and restructure Vim dotfiles.

~/.vim is now linked to ~/bin/dotfiles/vim where all vim files live.
vimrc and gvimrc are likewise linked from there. Bundles are now being
handled through neobundle instead of vundle, and are ignored in the
repository.

Note: YouCompleteMe is still present at this point, but not being used.
Consider removing this later if neocomplete proves to be worthwhile.