move `runAudit` to method on `Runner`
move `runAudit` to method on `Runner`

ev1stensberg/lighthouse,mixed/lighthouse,wardpeet/lighthouse,tkadlec/lighthouse,GoogleChrome/lighthouse,arturmiz/lighthouse,ev1stensberg/lighthouse,deepanjanroy/lighthouse,cedricbellet/lighthouse,arturmiz/lighthouse,wardpeet/lighthouse,ev1stensberg/lighthouse,umaar/lighthouse,tommycli/lighthouse,wardpeet/lighthouse,GoogleChrome/lighthouse,arturmiz/lighthouse,mixed/lighthouse,wardpeet/lighthouse,tommycli/lighthouse,cedricbellet/lighthouse,wardpeet/lighthouse,cedricbellet/lighthouse,cedricbellet/lighthouse,tkadlec/lighthouse,umaar/lighthouse,mixed/lighthouse,tommycli/lighthouse,tommycli/lighthouse,arturmiz/lighthouse,tkadlec/lighthouse,GoogleChrome/lighthouse,deepanjanroy/lighthouse,cedricbellet/lighthouse,umaar/lighthouse,tkadlec/lighthouse,arturmiz/lighthouse,GoogleChrome/lighthouse,deepanjanroy/lighthouse,mixed/lighthouse,deepanjanroy/lighthouse,GoogleChrome/lighthouse,deepanjanroy/lighthouse,tommycli/lighthouse,ev1stensberg/lighthouse,umaar/lighthouse