Fix for Fritzing Part

Schematic View:
> fixed unconnected connector
> removed unused paths and connectors

Sanitized schematic.

Removed "Pin not connected" errors. Net labels terminate on wire endpoints. Fixed P1 P2 symbol pin number overlap. Added sch heading

Clarify chipselect silkscreen prints

o The ChipSelect for SPI0 is CS0, for SPI1 is CS1.

o The ChipSelect for SPI0 is CS0, for SPI1 is CS1.

Silkscreen updates

This resolves issue #4

.

Signed-off-by: Michael Welling <mwelling@ieee.org>

GPIO44 is incorrectly labelled as GPIO48.
Still needs to be corrected on the Eagle design.

Signed-off-by: Michael Welling <mwelling@ieee.org>

The pin is the battery temperature pin not GND.

Signed-off-by: Michael Welling <mwelling@ieee.org>

Typo fix

Typo fix

Add Makefile to create gerbers from *.kicad_pcb.

Add a bit more clearance connector->silkscreen.

This also prepares the possibility to add a %%gitversion%%
string somewhere on the silkscreen which is replaced with the current
git version (but no such silkscreen is added in this commit).

If a connector is soldered onto the bottom side of the board, it
partially covers up the silkscreen. This adds a little more space
to have that less of a problem.