When the user provisions, output login detail

First provision:
```bash
$ v provision
==> default: Running provisioner: shell...
    default: Running: /var/folders/hw/q27f_v1d1lq0zpcpl73yc96c0000gn/T/vagrant-shell20141217-91962-kvwbwu.sh
==> default: stdin: is not a tty
==> default: Running provisioner: shell...
    default: Running: inline script
==> default: stdin: is not a tty
==> default: Notice: Compiled catalog for vagrant.local in environment development in 3.94 seconds
==> default: Notice: Finished catalog run in 2.40 seconds
==> default: Running provisioner: shell...
    default: Running: /var/folders/hw/q27f_v1d1lq0zpcpl73yc96c0000gn/T/vagrant-shell20141217-91962-cc7f7r.sh
==> default: stdin: is not a tty
==> default: ======================================
==> default: Your Chassis box has been provisioned!
==> default: ======================================
==> default: 
==> default: URL: http://vagrant.local/
==> default: Username: admin
==> default: Password: password
```

Subsequent provisions:
```bash
$ v provision
==> default: Running provisioner: shell...
    default: Running: /var/folders/hw/q27f_v1d1lq0zpcpl73yc96c0000gn/T/vagrant-shell20141217-91991-zuccvj.sh
==> default: stdin: is not a tty
==> default: Running provisioner: shell...
    default: Running: inline script
==> default: stdin: is not a tty
==> default: Notice: Compiled catalog for vagrant.local in environment development in 4.72 seconds
==> default: Notice: Finished catalog run in 2.30 seconds
==> default: Running provisioner: shell...
    default: Running: /var/folders/hw/q27f_v1d1lq0zpcpl73yc96c0000gn/T/vagrant-shell20141217-91991-m7a0il.sh
==> default: stdin: is not a tty
```

Includes default Vagrant colours:
![screenshot 2014-12-17 18 07 50](https://cloud.githubusercontent.com/assets/21655/5468228/afdcb792-8617-11e4-9438-ecac53944f1a.png)