Provide docs to upgrade from CE to EE
https://documentation.magnolia-cms.com/display/DOCS62/How+to+upgrade+from+CE+to+DX+Core

Possible content:

• Explain some general stuff, such as
  • You will need a license
  • There is EE Std. and EE Pro
  • You can do it
    • with Maven (preferred option)
    • or manually by copying around jar files
• Provide a recipe
  • Maven based
    • Upgrade a preconfigured mgnl bundle
      • to EE STd.
      • to EE PRO
  • manually