Remove apt-get install from travis
Remove apt-get install from travis

CSBill/CSBill,CSBill/CSBill,SolidInvoice/SolidInvoice,pierredup/CSBill,pierredup/CSBill,CSBill/CSBill,SolidInvoice/SolidInvoice,pierredup/CSBill,CSBill/CSBill,pierredup/CSBill,SolidInvoice/SolidInvoice,pierredup/SolidInvoice,pierredup/SolidInvoice