Travis: Don't test vendor PHP files
Travis: Don't test vendor PHP files

smcdougall/Pico,theshka/Pico,dav-m85/Pico,ondrejd/Pico,dav-m85/Pico,lukasz-jakub-adamczuk/tech-jump-guide,PhrozenByte/Pico,ondrejd/Pico,PhrozenByte/Pico,lukasz-jakub-adamczuk/tech-jump-guide,TakamiChie/Pico,fabianacero/fabianacerog,fabianacero/fabianacerog,fabianacero/fabianacerog,picocms/Pico,smcdougall/Pico,TakamiChie/Pico,TakamiChie/Pico,TakamiChie/Pico,smcdougall/Pico,ondrejd/Pico,picocms/Pico,dav-m85/Pico,theshka/Pico,theshka/Pico,PhrozenByte/Pico,picocms/Pico,lukasz-jakub-adamczuk/tech-jump-guide