do actual install

Great package, but why not add the actual install if the dependencies where added and lest say put it under custom flag like typesync --install. Because what i would love to do is just to add it in my post install scripts and do not care about it at all.

[jeffijoe]

Alternatively, add my original suggestion as a run script 😄

[1natsu172]

@tomas-sereikis @jeffijoe

Great package! We can now use --ignore-scripts to suppress the postinstall infinite loop.

"scripts": {
  "postinstall": "npx typesync && yarn install --ignore-scripts" 
}

This may be better if written in README as an example of Tips?