Create a quick site to introduce Rubydex linter

[st0012]

We should create a quick site to introduce Rubydex linter, specifically:

• When to create a linter vs a test
• Rubydex linter vs RuboCop
• When NOT to create a Rubydex linter (when it doesn't use Rubydex at all)
• How to create a basic linter rule
• Rubydex API to use (link to Rubydex's API site)