Doc for the path module
Doc for the path module

Signed-off-by: Jeremie Dimino <aa5d8c8bb73d4465608582ffc8dcd3cb76639f53@dimino.org>

janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,dra27/jbuilder,dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder