Added support for hexdecimal color strings in fade_to_color
Added fluorescent light color temperatures
Corrected get_serial_number call & added close().
Merge pull request #123 from salimfadhley/master

Added support for hexadecimal strings + added fluorescent color temperatures to the white-point correction
Merge pull request #125 from TheQwerty/patch-2

Corrected get_serial_number call & added close().
Merge branch 'master' of https://github.com/todbot/blink1