Update README.md

Author: ArikReuter

README.md

@@ -279,6 +279,9 @@ When using the "pprompt" or "prompt" function, TopicGPT can behave differently t
 
 -  In case of hallucination of facts it may help to use GPT-4 for TopicGPT
 
+### Testing 
+
+To ensure that TopicGPT runs as intended, you can install the package and run the two test files under test/TestPackage. Note that you need to provide your api-key to the scripts via the keyword argument "--api-key". Note that it is possible that some tests fail because of the stochasticity of the model or errors of the OpenAI API. You can try to run those tests again and see if they work on the second try.
 
 ## How TopicGPT works
 
@@ -340,4 +343,4 @@ The following models, software packages and ideas are central for TopicGPT:
   - Brown, Tom B., et al. “Language Models are Few-Shot Learners.” Advances in Neural Information Processing Systems 33 (2020).
   - Radford, Alec, et al. “GPT-4: Generative Pre-training of Transformers with Discrete Latent Variables.” arXiv preprint arXiv:2302.07413 (2023).
   - Radford, Alec, et al. “Improving Language Understanding by Generative Pre-Training.” URL: https://s3-us-west-2.amazonaws.com/openai-assets/research-covers/language-unsupervised/language_understanding_paper.pdf. [6]
-  - Radford, Alec, et al. “Language Models are Unsupervised Multitask Learners.” OpenAI Blog 1.8 (2019): 9. [7]
+  - Radford, Alec, et al. “Language Models are Unsupervised Multitask Learners.” OpenAI Blog 1.8 (2019): 9. [7]