added config task to default rake task
added config task to default rake task

BBC-News/wraith,OfflineAudio/wraith,marciovicente/wraith,webdev1001/wraith,jzinkdi/wraith,deividmarques/wraith,sbelyea/wraith-sbelyea.github.io,webdev1001/wraith,peruukki/wraith,deividmarques/wraith,frob/wraith-selenium,peruukki/wraith,deividmarques/wraith,LessonPlanet/wraith,webdev1001/wraith,marciovicente/wraith,peruukki/wraith,BBC-News/wraith,OfflineAudio/wraith,guimoreira07/wraith,jaredstehler/wraith,jzinkdi/wraith,saulirajala/wraith,marciovicente/wraith,jaredstehler/wraith,LessonPlanet/wraith,jlarusso-canvas/wraith-time-diff,guimoreira07/wraith,sideci-sample/sideci-sample-wraith,sbelyea/wraith-sbelyea.github.io,saulirajala/wraith,frob/wraith-selenium,sideci-sample/sideci-sample-wraith,jaredstehler/wraith,adouglas/wraith,adouglas/wraith,guimoreira07/wraith,adouglas/wraith,jlarusso-canvas/wraith-time-diff,saulirajala/wraith,frob/wraith-selenium,BBC-News/wraith,jzinkdi/wraith,LessonPlanet/wraith