Update README.md

fix: comment in the doc file

fix: table insertion with index

fix: gitignore for the database folder + prompt for requirements + 3 blocks max for best_sources

feat: requirement part fonctionnal

fix: json loads for the requirements file

fix: index for block_requirements

feat: added the reading of the excel file, and the possibility to download a copy of the file.

feat: new public GenProp

initial commit