Remove shared folder path from final build

Currently an error is returned (see attached image) when starting the VM. This is happening because the shared folder 'i2b2VMShared' could not be setup because the Shared folder path '/Users/davidwang/Desktop/i2b2VMShared' does not exist on the host.

We need to make this link more generic (remove 'davidwang') and document how users can fix it before starting the machine.

Another option is to remove the shared folder completely but then you loose the example to show users how to easily transfer files between local desktop and the machine on the VM.