Add travis file.
Add travis file.

schneiderandre/ASCScreenBrightnessDetector,schneiderandre/ASCScreenBrightnessDetector,caamorales/ASCScreenBrightnessDetector,caamorales/ASCScreenBrightnessDetector,schneiderandre/ASCScreenBrightnessDetector,caamorales/ASCScreenBrightnessDetector,caamorales/ASCScreenBrightnessDetector