Reformat deploy section

Update setup.py so it can be used in CPython on RPi

Merge pull request adafruit#17 from cerickson/issue8_spi_nochipselect

Made chip_select default to None

Merge pull request adafruit#16 from sommersoft/new_docs

Improve Ref Docs

Merge pull request adafruit#15 from mrmcwethy/examples

added examples folder and two example .py

Merge pull request adafruit#12 from tannewt/lint

Update to new build process and turn on lint.

I tested and showed that the default and overrides are correctly passed to  spi.config().  Since I do not have a oscilloscope i cannot say whether the configuration values were acted upon by the busio.SPI, but i did show that the changes to the project were correct.

remove deprecated method read_into

Added readinto() method to be more consistant with busdevice.spi. (ad…

…afruit#10)

Added warning on read_into() saying it will be deprecated in the future

Update readme with chat room docs and stop a warning.

Use busio after nativeio split.