In this assignment, we will build an interactive dashboard to explore the Belly Button Biodiversity dataset, which catalogs the microbes that colonize human navels.

The dataset reveals that a small handful of microbial species (also called operational taxonomic units, or OTUs, in the study) were present in more than 70% of people, while the rest were relatively rare.

Methods:

1. Use D3.js library to read in samples.json file
2. Create a horizontal bar chart with a dropdown menu to display the top 10 OTUs found in each individual.
3. Create a bubble chart to display each OTU and their representation.
4. Display the sample metadata, i.e., an individual's demographic information.
5. Display each key-value pair from the metadata JSON object somewhere on the page.
6. Update all the plots when a new sample is selected.
7. Deploy your app to a free static page hosting service, such as GitHub Pages.