How to connect Flora 2 and nRF8001 BLE Breakout
The SPI bus can be accessed using a 6 pin header located next to the embedded processor.  Look at the embedded image below. Locate the 6 pin header just to the right of the processor.  Note the white dot indicating pin1 of the header.  Now look at the bottom of the embedded image to see the definitions of the 6 pins.  MISO, MOSI and several other SPI signals are listed.