Improve google ranking slightly by mentioning OpenStreetMap

[CloCkWeRX]

When I search for OpenStreetMap + MapCraft, I don't actually find this tool.

This pull request

• Adds a few things to the title
• Adds a static landing page with a bit more information
• Adds a screenshot
• Adds links to the wiki article about the app, which acts as "Help"

[CloCkWeRX]

Oops, intended to do 1c149f1...e7186da as a second PR.