Documentation Improvements

[adnankussair]

@hollychovan see #2 here: https://tnsfm.sharepoint.com/SitePages/goals.aspx#make-documentation-a-first-class-responsibility

• Remove the image from the readme docs
• Add updated images to the addon listing on the statamic marketplace.

[hollychovan]

[adnankussair]

@hollychovan See this style for feature cards/screenshots:

[hollychovan]

@adnankussair Here is the review documentation page: https://transformstudios.com/addons/review/review-documentation?token=3839bdc7-8a4a-4835-8b0d-d7fcd8715857

Let me know if you have any feedback. I went through the content and added what I thought helped add clarity. Created those card graphics like the ones provided above. Let me know your thoughts. Thanks!