Added self-deleting bash stager.
Added self-deleting bash stager.

adaptivethreat/EmPyre,adaptivethreat/EmPyre,EmpireProject/EmPyre,adaptivethreat/EmPyre,adaptivethreat/EmPyre,adaptivethreat/EmPyre,EmpireProject/EmPyre,EmpireProject/EmPyre,EmpireProject/EmPyre,EmpireProject/EmPyre