re-structure the index in an only folder, deleting almost all the WARNINGS in the doc files
faqs refactor with different sections about biicode, rpi and c/c++
refactoring hardware/arduino folder and rpi, deleting warnings in Sphinx creation files
adding answer to rpi faqs, adding interesting link to guide, fixing errors
fixed error in rpi faq
merging  with master
adding new way to put the code in different files
lines and tabs from code files, versionin conf. Tried templates without success