use an already-present .quicklisp directory

[argentcorvid]

I don't know if it's worthy of opening an issue for a change to the Getting Started guide, but for those that would like to try out Lem and use an already present .quicklisp directory, it is possible to do so by adding a line to init.lisp:

(lem-core::init-quicklisp (merge-pathnames ".quicklisp/" (user-homedir-pathname)))

will do it.

This prevents you from having duplicated directories. Maybe only an issue on the Windows build?