Update README.md

README.md

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 [![Documentation Status](https://readthedocs.org/projects/nbforms/badge/?version=latest)](https://nbforms.readthedocs.io/en/latest/?badge=latest)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/chrispyles/nbforms/main?filepath=demo%2Fdemo.ipynb)
 
-nbforms is a Python package designed to allow forms to be submitted by users such that the data they submit is immediately available for use in the notebook by the entire group. This is accomplished using ipywidgets and a Heroku-deployable Sinatra webapp, [nbforms-server](https://github.com/chrispyles/nbforms-server).
+nbforms is a Python package designed to allow forms to be submitted by users such that the data they submit is immediately available for use in the notebook by the entire group. This is accomplished using ipywidgets and a shared web server, [nbforms-server](https://github.com/chrispyles/nbforms-server), that the Python client uploads its data to.
 
 ## Installation