Added a simple SPI support
Repaired broken script
Merge pull request #76 from manuIO/next

clean/add comments actuators
Corrected TAR download link
Added weioSPI.py driver
Added weioSerial.py driver
Corrected tar downloader local and distant
Serial port driver and it's example corrected
Weio SPI driver added
Added examples for interfaces
Added portWrite and portRead functions to docs
Added portMode function description
Added paragraphe about plugging WeIO to electricity
SPI corrections
Added Starwars theme to examples
Added documentation fot tone&noTone corrected syntax for noTone
Added new functions to the doc
Corrections of markdown for documentation
Deleted unused image
Corrected bug if no last project exits