@dave1986 fixed writeScratchPad bug

http://forum.arduino.cc/index.php?topic=179782.msg1332693#msg1332693

" found the problem by myself... 
the Library DallasTemperature.h has an error in the function writeScratchPad().

after writing the Scratchpad it says it is storing the Data also into the EEPROM, but before it does that, it is neccessary to send an _wire->reset().
unfortunately it forgets to address the device newly, so the no device will accept the next copy-command.

here the code snippet that i've corrected"