Updated ultrasonic fix, increased stability
Generate unique identifier for blockly at startup (stored in /etc/blocklyId)
abstracted out the upload script so that i can call it from other functions
The btu now responds to server packets. I have not yet tested the calls to blockly_webserver although.
The rails server can now push code to the BTUs successfully.
The guids now come with a Luhn checksum.
Fixed bug in guid algorithm
Use A-Z (excluding O's) when generating GUIDs
Make sure that the generated guids are of the same length (14)