feat/Better readme

[jeaneigsi]

Please kindly specify the numpy version used, for beginner it's really painful to use this library , a lot of unknow bugs 👍 !pip uninstall numpy -y
!pip install -q numpy==2.0.2
!pip install "unstructured[all-docs]"
!pip install -q pi-heif==1.1.0 unstructured-inference
!sudo apt update && sudo apt install -y poppler-utils
!pip install -q pdf2image

env : linux setup