using the time library

now() is epoch time, without any setup, it's 0 when booting and runs
from there. As the time lib doesn't mess with ethernet interupts, it's
used to track time running and keeps bulb on as long has it need to be.
The bulb stays on while now() is < than bulbTimers[bulbindex] which is
epoch of order + ( size of tweet * multiplier )
move directory and correct small bugs

Small bugs correction… adding a turn off delay to get a blink in case
of new tweet coming while light allready on.
Change default multiplier to 0.2 so a 140 chars tweet will keep light
on for 28seconds.

Move the arduino ino file from /client/arduino/TCPClient.ino to
/client/arduino/TCPClient/TCPClient.ino to respect arduino path
convention.
update readme