Documentation update request

[mdziczkowski]

Hello. I would like request a update of the documentation. In my opinion, currently are following elements missing:

• examples (including the configuration, Vargantfile, etc.)

• reference of the variables, etc. that can be used

• detailed toturials (current ones are too general)

• etc.

Adding above would be very helpfull for those who would like to use Vargant and for who the current informations are too general.

Thanks