modify readme

packages/README.md

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 ## Dependency Installation and Updates
 We use NPM to handle the blocks and script dependencies.
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 Each package has a script `install.js` automatically injected in the release of the package process.
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 When the package is installed in a project, using `npm i @netcentric/eddys-<module-name>`, or the dependencies are upgraded using `npm upgrade`, this script is executed in the `postinstall` scripts.
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 The `install.js` script copies all what is in the package `/libs` folder and searches in our Edge delivery project for a `/libs` folder, if it doesn't exist it creates it and includes all the content copied from the package, if it does exist it includes the content, it updates it if it was already there.
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 The project packages can be controlled through the project `package.json` file, and the project `/libs` folder can be upgraded just using `npm upgrade` command.