Initial sync of all analog solution

This electronics variant is an all analog solution which provides
filtered analog amplifiers for thermocouple inputs, and utilizes the
built-in ADC on the Spark core itself.
Also synced some documentation on thermocouple sensing.
Purposefully selected some multi-purpose I/O on the spark core for ADC
inputs such that the SPI interface is left intact.
Components not yet selected.
Schematic Complete, Component Selection Complete

Next step is reviewing schematic to make sure it meets requirements,
reviewing components to ensure they are adequate for the solution, then
generating footprints for oddball connectors.
Added terminal blocks

LoL added terminal blocks for improved prototyping.
Considering alternative linear regulator to run off of this board as an
alternative power feed. Also considering external power feed and MOSFETs
to switch external loads such as fans, lights, etc.