Remove outdated paragraph in readme

Update text descriptions

Add extra retriever example

Merge pull request #4 from tensorsense/hierarchical_retrieval

Add example run for the notebook

Remove outdated files

Fix broken llm setup in hierarchical retrieval notebook

Update hierarchical retrieval

Migrate to LlamaIndex 0.10

Use jupyter to fix the broken notebook

Fix broken execution count in the notebook

Add hierarchical_retrieval.ipynb notebook

Add string identifier to PdfResult

Update LatexChunk to hold b64 encoded image where applicable

Fix LatexChunk optional properties typing