Supports providing an alternate GOPATH using the .gopath file

I believe yes, let me try.

----- Original Message -----
> > @@ -19,7 +19,9 @@ If you want to serve web requests (vs. running in the
> > background), you'll need t
> >  
> >  The repository contains a sample go file which will print "hello, world"
> >  when someone hits your web application - see
> >  [web.go](https://github.com/smarterclayton/openshift-go-cart/blob/master/template/web.go).
> >  
> > -Any log output will be generated to <code>$OPENSHIFT_GO_LOG_DIR</code>
> > +Any log output will be generated to <code>$OPENSHIFT_GO_LOG_DIR</code>.
> > +
> > +If you want to override the cartridge GOPATH and provide your own, create
> > and add a ".gopath" file in your repo with the desired GOPATH location,
> > *relative to the $OPENSHIFT_HOMEDIR directory*. Example of a .gopath file
> > content: `app-root/data/mygopath`.
> 
> And should this GOPATH just be additive?
> 
> ---
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> https://github.com/smarterclayton/openshift-go-cart/pull/14/files#r21938872