Invoice is a document business transactions issued by a seller to a buyer indicating items sold, prices, date of shipment, delivery and payment terms.It is also called as a “bill”, “statement” or “sales invoice”.The term invoice indicates money the buyer owes to a seller.The invoice is also specified with the period of time after which the buyer has to make payment to the seller for the goods and services they have purchased

django 2.0 python 3.6.4

• set-up postgres database
• pip install requirements.txt