Adding mini-PCI Express expansion board as dependency.
Adding the SATA connector library.
Temporary commit with latest updated.
Moving the antenna onto its own board.
Removing the antenna from the radio schematic.
Preparing to hook up mPCIe connector and adding documentation.
Lots of different fixes.

 * Removing mpcie and replacing with onboard memory (freeing up some pins).

 * Changing the SPI configuration (don't actually need the fancy 3 way header).
   Added lots of documentation how to work with SPI flash for booting,
   programming, etc.

 * Fixed all the electrical DRC errors.