readme for sample server

sample-server/README

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+# Sample Server
+
+## Requirements
+
+- [nginx](https://www.nginx.com/resources/wiki/start/topics/tutorials/install/): On macos with homebrew, `brew install nginx`
+- [uwsgi](https://uwsgi-docs.readthedocs.io/en/latest/Install.html): With python, `pip install uwsgi`.
+- pipenv and honcho: If you have the regular atst dependencies installed, you already have pipenv and honcho
+
+## Run
+
+The sample server runs at localhost:8000, so you cannot have another copy of the app running on that port.
+
+Start both NGINX and uWSGI with honcho:
+
+```
+pipenv run honcho start -f sample-server/Procfile
+```