All input types should be documented (with examples) in README

[tomasz-sobczyk-wttech]

Currently there is very sparse example for inputs, and then it has a link to a service, which needs to be carefully inspected to understand the formats etc.

[krystian-panek-vmltech]

I have planned to document them as snippets with examples and images. But just haven't enough time. Thanks for raising this. In next batch of updates I will cover it.