Updated README with dependencies for ubuntu.
Updated README with dependencies for ubuntu.

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