message: Add info to README, add Contributing.md
diff: +# Office JavaScript API Reference
  +
  +Welcome to the Office JavaScript API Reference documentation repository. For the best experience, we recommend you view this content on [docs.microsoft.com](https://docs.microsoft.com/javascript/api/overview/office?view=office-js).
  +
  +> **Note**: You can find the documentation source files for Office JavaScript API concepts, quickstarts, tutorials, and how-to guides in the [OfficeDev/office-js-docs-pr](https://github.com/OfficeDev/office-js-docs-pr) repository.
  +
  +## Give us your feedback
  +
  +Your feedback is important to us.
  +
  +* To let us know about any questions or issues you find in the docs, [submit an issue](https://github.com/OfficeDev/office-js-docs-reference/issues) in this repository. Make sure you state the version + build number of the client you are using, and provide repro steps, console output, and error messages, as appropriate.
  +
  +* We also welcome your contributions to this documentation. To contribute, fork this repository, update the files as you deem necessary, and submit a pull request with your proposed changes. For details, see [Contribute to this documentation](Contributing.md).
  +
  + > **IMPORTANT**: Do not modify files within the [/docs/docs-ref-autogen](https://github.com/OfficeDev/office-js-docs-reference/tree/master/docs/docs-ref-autogen) folder of this repository. All of the files in that folder are autogenerated, so it is not possible to update them via pull request. To request a change to any of the files in the [/docs/docs-ref-autogen](https://github.com/OfficeDev/office-js-docs-reference/tree/master/docs/docs-ref-autogen) folder, please [submit an issue](https://github.com/OfficeDev/office-js-docs-reference/issues) in this repository.
  +
  +* To let us know about your programming experience, what you would like to see in future versions, code samples, and so on, enter your suggestions and ideas at [Office Developer Platform UserVoice](https://officespdev.uservoice.com/).
  +
  +
  ## Microsoft Open Source Code of Conduct
  +
  This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
  For more information, see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/), or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.
  