Updated readme to mention that this library needs ollama service to be running and also snippet to run it if someone is using a jupyter notebook

[omkar787]

Note added in readme about the fact that the ollama service should be running before using ollama python library and also details about how to solve the connection refused error while running ollama in a jupyter notebook is also added

[omkar787]

Yes, this will be very helpful for newcomers

Yes 🚀