.travis.yml: Build with -Werror -Wall
.travis.yml: Build with -Werror -Wall

Icelandjack/lens,timjb/lens,cchalmers/lens,rpglover64/lens,Gabriel439/lens,hvr/lens,Fuuzetsu/lens,omefire/lens,hvr/lens,ddssff/lens,danidiaz/lens,cdepillabout/lens