Wiki pages need to update out-of-date information

[fossfreedom]

Wiki How to contains out-of-date pictures and info - and also needs updating with the latest v2 functionality.

Hoping someone can help out here ... wiki is editable by anyone!

• https://github.com/fossfreedom/coverart-browser/wiki/How-the-plugin-works
• https://github.com/fossfreedom/coverart-browser/wiki/how-to-for-version-2.0

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