Add README

Author: cmaureir

README.md

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+# Conference Stats
+
+The goal of this repository is to gather the public conference information
+from the many Python events we have in Europe, so new ones can have a good
+understanding of who to contact for future events for sponsorship possibilities
+but also for speaking opportunities.
+
+The data will also highlight the companies/organizations that are helping the
+most in Python conferences, similarly to the most active speakers.
+
+> **Have an idea?** If you believe more data can be added, or new insights can
+> be extracted, please open an Issue!
+
+# List of Conferences
+
+* EuroPython: 2025
+* PyCon Italy:
+* PyCon Greece:
+
+# How to contribute?
+
+You can visit any missing conference edition, and populate the JSON files
+accordinly with the `YYYY-levels` information, and an array for `YYYY`
+listing all the sponsors. See `sponsors.json` for more information.
+
+Remember to submit a Pull Request with the information and adding the
+conference and year to this README.
+
+**Not enough time?**
+You can open new issues by providing a URL for the conference,
+sponsorship packages details and list of sponsors, so others can extract
+the information. This would be helpful as well!