USAGOV-2133 readme improvements

[whitealbum]

Jira Task

Updates and Improvements to the README.md file

https://cm-jira.usa.gov/browse/USAGOV-2133

Description

Type of Changes

• New Feature
• Bugfix
• Frontend (Twig, Sass, JS)
  • Add screenshot showing what it should look like
• Drupal Config (requires "drush cim")
• New Modules (requires rebuild)
• Documentation
• Infrastructure
  • CMS
  • WAF
  • WWW
  • Egress
  • Tools
  • Cron
• Other

Testing Instructions

Confirm all links work, instructions are accurate, and language is grammatically and syntactically correct.
Ensure styles are consistent.

Change Requirements

N/A

• Requires New Documentation (Link: {})
• Requires New Config
• Requires New Content

Validation Steps

N/A

Security Review

N/A

• Adds/updates software (including a library or Drupal module)
• Communication with external service
• Changes permissions or workflow
• Requires SSPP updates

Reviewer Reminders

• Reviewed code changes
• Reviewed functionality
• Security review complete or not required

Post PR Approval Instructions

Follow these steps as soon as you merge the new changes.

1. Go to the USAGov Circle CI project.
2. Find the commit of this pull request.
3. Build and deploy the changes.
4. Update the Jira ticket by changing the ticket status to Review in Test and add a comment. State whether the change is already visible on cms-dev.usa.gov and beta-dev.usa.gov, or if the deployment is still in process.

[akf]

Thanks for improving this! I made a few suggestions (which probably need some wordsmithing).

Also, since you're going for consistency, GSA has standardized on sentence case for titles. Obviously this matters more for our web sites, but I think it's helpful to carry it through in our internal-focused communications too.

Headings should be in sentence case

Headings Should Not Be in Title Case

This will actually help a bit with consistency, I think, because there are a few very long headings that I see none of us was willing to put in title case