Remove (or just move) example data

[kbytesys]

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The repository contains example data, but you would like to have a "ready to use" environment when you download the project instead of a runnable example.

If you don't want to remove those files, you can just move them in a dedicated directory, because it's easier to remove a directory instead of looking for many files in different directories.

Example: step-definitions/*.js -> example/step-definitions