This has a benefit of not assuming that the user .emacs.d/ is in the
user home directory. Should continue to work as expected when this is
the case, but you could also start a fresh Emacs session like
so (assumes OSX):
open -a Emacs.app -n --args -q -l /path/to/emacs.d/init.el
So you don't have to muddle with symlinking your ~/.emacs.d or replacing
it with another just to try Spacemacs (or any other config). Note, that
this won't work with `after-init-hook` which doesn't appear to run when
Emacs is run with -q flag. As a result the `dotspacemacs/config` in your
.spacemacs won't run.
