Avoid infinite loop in VE.pm get function

Hi !

When trying to use your code, I ran on an infinite loop when trying to execute a get. This is caused by the call of $self->nodes which calls $self->get which takes us back to $self->nodes and so on. I just commented it out for the moment, maybe you will get a better idea on what to do with this ?

I also added some examples to document the api usage.

Thanks for this module, I find it very useful ;-)