adding a few web usage post placeholders.

[Sheeri]

Removing CI/CD, adding information to README about the script, adding the script run to the pull request template

Related Issue

Fixes #121

Checklist:

• [x] I have read the contributor's guide.
• [x] I linked an issue in the previous section
• [x] I have commented on the linked issue
• [x] I was assigned the linked issue (not required)
• [x] I have tested the change to the best of my ability against the sandbox or a local build. Output of link/image checker is:

Configuration file: /Users/sheeri/github/wildaid.github.io/_config.yml
            Source: /Users/sheeri/github/wildaid.github.io
       Destination: /Users/sheeri/github/wildaid.github.io/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
      Remote Theme: Using theme pmarsceill/just-the-docs
       Jekyll Feed: Generating feed for posts
   GitHub Metadata: No GitHub API authentication could be found. Some fields may be missing or have incorrect data.
                    done in 7.985 seconds.
 Auto-regeneration: disabled. Use --watch to enable.

Running ["ImageCheck", "LinkCheck", "ScriptCheck"] on ["_site"] on *.html... 

Checking 73 external links...
Ran on 43 files!

HTML-Proofer finished successfully.

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• Optional: Add any relevant screenshots here