detection.c: Added more comments. Using a more consistent style.
bookKeeping.c: Removed unused variable from backDeviceUp/1
README.md: Fixed typo
Implemented #9: Each slot in a card reader is now uniquely identified
detection.c: Some minor refactoring
detection.c: Individial device properties are trimmed/tidied up
Removed tools/splint.sh; using valgrind instead.