Improve the README

- Link to deployments
- Link to documentation sites

README.md

@@ -8,9 +8,20 @@ Excellent applications for Times Square include:
 - Quick-look data previewing
 - Reports that incorporate live data sources
 
+## Deployments of Times Square
+
+| Link                                                                  | User guide                                                                    | Purpose                     |
+| --------------------------------------------------------------------- | ----------------------------------------------------------------------------- | --------------------------- |
+| [USDF RSP (dev)](https://usdf-rsp-dev.slac.stanford.edu/times-square) | [Documentation](https://rsp.lsst.io/v/usdfdev/guides/times-square/index.html) | For Rubin Observatory staff |
+| [IDF (dev)](https://data-dev.lsst.cloud/times-square)                 | [Documentation](https://rsp.lsst.io/v/idfdev/guides/times-square/index.html)  | For SQuaRE developers       |
+
+## Design and development
+
 The design and architecture of Times Square is described in [SQR-062: The Times Square service for publishing parameterized Jupyter Notebooks in the Rubin Science platform](https://sqr-062.lsst.io).
 Times Square uses [Noteburst](https://noteburst.lsst.io) ([GitHub](https://github.com/lsst-sqre/noteburst), [SQR-065](https://sqr-065.lsst.io)) to execute Jupyter Notebooks in Nublado (JupyterLab) instances, thereby mechanizing the RSP's notebook aspect.
 
 This Times Square API service is developed at https://github.com/lsst-sqre/times-square.
-It's user interface is part of [Squareone](https://github.com/lsst-sqre/squareone).
+Its user interface is part of [Squareone](https://github.com/lsst-sqre/squareone).
 Times Square is deployed with [Phalanx](https://phalanx.lsst.io/applications/times-square/index.html).
+
+REST API and developer documentation is at [times-square.lsst.io](https://times-square.lsst.io) and deployment documentation is [available at phalanx.lsst.io](https://phalanx.lsst.io/applications/times-square/index.html).