Pi Zero USB case with heatsink

This case allows you to have a headless Raspberry Pi connected to a plug. It is remix of Radiation_Joe's case with the following changes:

- The HDMI port is not exposed
- A bit more room for the Micro SD card
- A hole that fits the heatsink

I'm also providing the SketchUp sources so you can further modify it.

To access via SSH and WiFi:

1. Create empty file `ssh` in the SD Card directory.
- On Mac os, just do `touch /Volumes/boot/ssh` in a Terminal.
2. Create the file `wpa_supplicant.conf` in the SD Card boot directory, and put the following inside, replacing the country code (US, ES, CH for instance) and your WiFi data.

```
country=2-LETTER-COUNTRY-CODE
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
ssid="NETWORK-NAME"
psk="NETWORK-PASSWORD"
}
```