[Demos] Adding OctoAI API Examples (Hosted Llama solution) (#379)

README.md

demo_apps/OctoAI_API_examples/Getting_to_know_Llama.ipynb

demo_apps/OctoAI_API_examples/HelloLlamaCloud.ipynb

demo_apps/OctoAI_API_examples/LiveData.ipynb

demo_apps/OctoAI_API_examples/Llama2_Gradio.ipynb

...PI_examples/RAG_Chatbot_example/RAG_Chatbot_Example.ipynb

.../RAG_Chatbot_example/data/Llama Getting Started Guide.pdf

.../OctoAI_API_examples/RAG_Chatbot_example/requirements.txt

...ples/RAG_Chatbot_example/vectorstore/db_faiss/index.faiss

...amples/RAG_Chatbot_example/vectorstore/db_faiss/index.pkl

demo_apps/OctoAI_API_examples/VideoSummary.ipynb

demo_apps/README.md

examples/Purple_Llama_OctoAI.ipynb

examples/README.md