next init: Exit non-zero when refusing to run in 'pages' dir. (#156)
next init: Exit non-zero when refusing to run in 'pages' dir. (#156)

Should only exit `0` if the command was successful. The command refusing to execute should be considered a failure.

Also, this condition can be detected synchronously, no need to wait on the async existence check.
sedubois/next.js,flybayer/next.js,JeromeFitz/next.js,zeit/next.js,azukaru/next.js,flybayer/next.js,dstreet/next.js,flybayer/next.js,azukaru/next.js,kpdecker/next.js,BlancheXu/test,JeromeFitz/next.js,arunoda/next.js,BlancheXu/test,BlancheXu/test,flybayer/next.js,zeit/next.js,nelak/next.js,kevmannn/next.js,nikvm/next.js,dizlexik/next.js,zeit/next.js,azukaru/next.js,JeromeFitz/next.js,callumlocke/next.js,azukaru/next.js,giacomorebonato/next.js,nahue/next.js,JeromeFitz/next.js