Basta Fazoolin' sharing code

I have completed this project and this is my code -
https://github.com/rishitsaraf/Basta-Fazoolin-

please feel free to fork it.

I have completed the project. It took a bit but I got it done. Here is my code,

Caught a typo bug just after posting. In my first business I call new_installation, should be new_installment