ESP8266 Pogo Pin carriage and base

This pogo pin carriage and clamp base are designed to be used with [Teljemo's excellent 3Dclamp](http://www.thingiverse.com/thing:1359234) to provide an easy way to deal directly with bare ESP-12 modules, rather than buying a carrier board.

I have several projects in mind where size is a factor, so I don't want to get any of the larger, breadboard friendly carrier PCBs, but at the same time the ESP-12 modules are distinctly UNfriendly to breadboards (particularly with their pin spacing).

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