Allow the extention .tmp to be used to general ignored scripts (for instance)
- Support gpio pin input beside the serial input that we already supported. This allows for a much simpler setup without an additional Arduino.

- To make it even simpler we now use a software pull down resistor for the light dependent resistor (LDR). So this LDR can simple be put betwee the gpio pin and vcc.

- Some conventient options were added to the config file (default.py)