Added installation and usage instructions

Author: acidjunk

.env.example

@@ -0,0 +1,5 @@
+export TESTING=1
+export PYTHONUNBUFFERED=1
+export OAUTH2_ACTIVE=0
+export LOG_LEVEL=DEBUG
+export WEBSOCKET_BROADCASTER_URL="redis://localhost:6379"

README.md

@@ -4,4 +4,21 @@ Example workflow orchestrator
 (https://workfloworchestrator.org/orchestrator-core/) implementation.
 
 **Note: work in progress; first version expected to be released by the end 
-of 2023**
+of 2023**
+
+## Quickinstall
+
+Create a venv, then run these commands:
+
+```
+pip install -r requirements.txt
+python main.py db upgrade heads
+python -u -m uvicorn --reload --workers 4 --host 0.0.0.0 --port 8080 main:app
+```
+
+This assumes a environment that has correct settings or it will use the orchestrator-core defaults (like DB name orchestratorc-core).
+
+And example is in `.env.example`
+
+You can find a list with default settings [here](https://github.com/workfloworchestrator/orchestrator-core/blob/main/orchestrator/settings.py)
+