Code Cleanup

[Poofjunior]

Let's submodule the Adafruit library and implement the missing function calls. Doing so should elminate any copy-paste from external repos and keep up with any bugfixes on their end.

To get there, we need to:

Implement a blank Adafruit_I2CDevice

This is included as #include <Adafruit_I2CDevice.h>, and we'll need to stub out the read and write functions.

Implement Adafruit_SPIDevice and read/write functions

class Adafruit_SPIDevice
{
    // constructor
    Adafruit_SPIDevice(cspin, 1000000, SPI_BITORDER_MSBFIRST,
                                   SPI_MODE0, theSPI)
}

Implement Arduino.h

This should be another submodule from AIND. Ask @Poofjunior for the location of this.

File Organization

Let's submodule https://github.com/adafruit/Adafruit_BME680/tree/master into the lib folder.