My Emacs configurations
On Mac OS X, Ruby should already come pre-installed.
Warning: This will remove your ~/.emacs, ~/.emacs.el, and ~/.emacs.d,
if any, and symlink ~/emacs.d to the directory you just cloned.
git clone https://github.com/zhiyuanshi/emacs.d.git
cd emacs.d
rake up
The last command will create symlinks. Therefore, if the path to this directory
is changed, you need to run rake up again.
You may safely run rake up multiple times to update:
rake up