add new FreeIMU lib
clean up
FreeIMU
freeIMU working
delete old free IMU
update sensors.h
sensors change some types
Merge pull request #25 from WeAreLeka/dev

update from dev
update with good headers
keep bin in the loop but not the build folders
remove useless stuff
add wait behavior
ntd
update to do
change back to original
set min speed
update
delete loop and debug class/namespace
add serial if not defined
delete timer and speaker