Add 'sudo: required' to .travis.yaml
Add 'sudo: required' to .travis.yaml

jakwings/OpenCC,BYVoid/OpenCC,jakwings/OpenCC,PeterCxy/OpenCC,chongwf/OpenCC,PeterCxy/OpenCC,Arthur2e5/OpenCC,wisperwinter/OpenCC,chongwf/OpenCC,BYVoid/OpenCC,j717273419/OpenCC,chongwf/OpenCC,BYVoid/OpenCC,capturePointer/OpenCC,Arthur2e5/OpenCC,jakwings/OpenCC,xuecai/OpenCC,PeterCxy/OpenCC,j717273419/OpenCC,BYVoid/OpenCC,xuecai/OpenCC,BYVoid/OpenCC,j717273419/OpenCC,wisperwinter/OpenCC,xuecai/OpenCC,BYVoid/OpenCC,capturePointer/OpenCC,capturePointer/OpenCC,wisperwinter/OpenCC,Arthur2e5/OpenCC