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nodejs migration

Having been playing around with NodeJS recently, 
I (naturally?) started re-writing some of the OpenSesame code using Node last night.

I think I've only worked on it around 2 hours so far,
but I've already set up a basic client interface (a socket.io chat tutorial rip) with a server that the Raspberry Pi can connect to and receive requests to open the door. 

This is probably due to socket.io's socket management (socket.io is the WebSocket module for Node); for my first implementation, I had to manually write up a structure that managed sockets, but that is pretty much handled by socket.io.
Also, the servo control logic is pretty much recycled (and the Raspberry Pi code is still Python), and I do remember spending some good time figuring that out. 
Cool neverthelss.

I'll probably keep both versions around.

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