Update README.md with dependency information

[KartavyaSharma]

Currently, for the average user, the start.sh script is a blackbox. They don't know which dependencies/packages are being installed when the script runs, or rather its hard to decipher which ones due to the wall of text that shows up. Include a section in README.md where all the dependency information is listed, including python3 packages that are installed (included the ones for a headless Ubuntu Server setup), plus the binaries I download and setup in /bin.