Streamlined the `field` example to make Travis-CI happy
Streamlined the `field` example to make Travis-CI happy

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