README: add who is the provider

[vitaly-zdanevich]

Google? Yandex?

[belkka]

I really hope this extension doesn't silently share my data with google or yandex.

It's easy to double-click passwords or other private information when you want to select and copy it. If extension doesn't work offline and relies on third-party providers, as a user I wanna know who collects my data.

[TeTpaAka]

https://github.com/meetDeveloper/Dictionary-Anywhere/blob/master/background/background.js#L9C1-L9C81

    const { word, lang } = request, 
        url = `https://www.google.com/search?hl=${lang}&q=define+${word}&gl=US`;

It's apparently using Google.

[treasuretron]

wow that's a bummer, I'll be uninstalling this extension now. Should be searching a local dictionary.