Update Website Documentation

[maneshd]

We should have a few different things here:

1. A "Simple" version (edit file in GitHub -> PR -> ping someone -> auto update at 1AM)
2. A version for building the website locally
3. The full story (e.g., info about rlogin, how to push changes immediately, setting up the chrontab, permissions etc.)

These instructions could either be in the README here, or in a google Doc, linked from the README.