Calculator Exercise

Part 1

1. Fork this repo
2. On your local machine, clone the forked repo
3. Create the calculator below only using javascript.
4. Push your changes to github

Part 2

Make the calculator functional

1. Addition and Subtraction: When the ‘+’ or ‘-’ button is pushed, it adds/subtracts the current number displayed to the next inputted number.
2. Pressing the ‘=’ button shows the sum.