Ignore package folders without a package.json file
Ignore package folders without a package.json file

Closes atom/atom#3881

jlord/apm,bcoe/apm,AtaraxiaEta/apm,fscherwi/apm,atom/apm,pusateri/apm,VandeurenGlenn/apm,bronson/apm,Nikpolik/apm,jlord/apm,pusateri/apm,ethanp/apm,atom/apm,Nikpolik/apm,VandeurenGlenn/apm,fscherwi/apm,jlord/apm,AtaraxiaEta/apm,pusateri/apm,VandeurenGlenn/apm,Nikpolik/apm,fscherwi/apm,atom/apm,AtaraxiaEta/apm,ethanp/apm,jlord/apm,pusateri/apm,AtaraxiaEta/apm,ethanp/apm,atom/apm,bcoe/apm,gutsy/apm,gutsy/apm,AtaraxiaEta/apm,bcoe/apm,bcoe/apm,jlord/apm,ethanp/apm,VandeurenGlenn/apm,VandeurenGlenn/apm,pusateri/apm,VandeurenGlenn/apm,bcoe/apm,ethanp/apm,AtaraxiaEta/apm,jlord/apm,bronson/apm,gutsy/apm,ethanp/apm,fscherwi/apm,bronson/apm,bronson/apm,bcoe/apm,pusateri/apm,fscherwi/apm,gutsy/apm,fscherwi/apm,Nikpolik/apm