Add/improve explanations relative to data safety

[choco-latin]

In terms of safety maybe you could add a paragraph in your README explaining how giving your app the required access does not mean you are going to steal some data. I am saying this thinking about "my parents" or anybody wanting to use this without any prior knowledge of what's going on

[guyzyl]

@choco-latin that sounds like a good idea, if you can open a PR for that that'd be great.