fix: Update README.md

Updated readme to test release to npm.

Author: dlabaj

README.md

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 # PatternFly React Component Groups
 
 This repo contains a set of opinionated react component groups used to standardize functionality and look and feel across products.  The components are based on PatternFly with some additional functionality. 
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 ### Migration from [RedHatInsights/frontend-components](https://github.com/RedHatInsights/frontend-components) to [patternfly/react-component-groups](https://github.com/patternfly/react-component-groups)
 Please see the [migration guide](./migration.md)
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 ## Contribution guide