Update README.md

first commit

[Update]Prompt text adjustment

[Refactor]Improve docstrings and fix logger usage

[Refactor]Update function annotations

[Update]Report WebVoyager arXiv Task Performance (Strict Guidance System Prompt version)

[Update]Report WebVoyager arXiv Task Performance (Loose Guidance System Prompt version)

[Update]Report Original WebVoyager arXiv Task Performance (Original WebVoyager version)

[Update]Report WebVoyager arXiv Task Performance (Structured Steps version)

[Update]Report WebVoyager arXiv Task Performance (WebVoyager with RAG version)

[Refactor]Update function annotations and fix incorrect comments

[Update]Guidance prompt that considers the overall situation

[Add]Integrate document conversion, image description and retrieval enhanced generation (RAG) functions

[Add]TOC-based PDF processing and section chunking

change LICENSE