This PR introduces the following changes:

• The "Introduction" section is updated to provide clear instructions for the pair-programming flow that students should follow during the lab.
• The "Requirements" section is removed, which previously instructed students to use Repl.it to run JavaScript.
• A new section called "Getting Started" is added, with instructions on using VS Code to run JavaScript.
• The "Submission" section is updated to clarify when students should create and submit their pull request.