Update README with page update instructions

Added instructions for page updates and site changes.

Author: conniest

README.md

@@ -104,3 +104,13 @@ The following steps must be followed:
 3. Fork this repository if you haven't already, and create a new branch for the addition (`git checkout -b <branch>`)
 4. Run `GITHUB_TOKEN=<token_from_step_1> ./script/generate-newsletter.py > newsletter.md`
 5. Push the repo up and create a pull request (`git push -u origin <branch>`, click the link in the output to create a pull request)
+
+## Page updates and other site changes
+
+1. Make sure your github account is part of the PAARA organization on github
+2. Fork the paara-org.github.io  repo into your github
+3. **rename** your fork of the repo to **youraccountname.github.io**  (must be your login name; necessary for correct rendering)
+4. Enable "github pages" in your forked repo settings if not already enabled
+5. Make your updates in your fork
+6. Preview your rendered updates on **https://youraccountname.github.io**
+7. Open a pull request.    When it is merged, the updates will be pushed to production