Accessing S3 files

Hi,

A common use case is to use pandas to analyze large quantities of data.
This is usually done by
```
import pandas as pd
df = pd.read_csv("s3://your-bucket-name/your-file-path.csv")
```

Problem is that the system doesn't have s3fs as one of its available packages.

Could this be added? And if not, what would be my best option to read s3 files with pandas without manually downloading files and adding them to the file system, which is time costly.

Thanks