Merge pull request #14 from sunflower-ing/docs/readme

Merge docs/readme (#6)

Author: miron0xff

README.md

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+![python](https://img.shields.io/badge/python-3.8%20%7C%203.9%20%7C%203.10-blue)
+
+# Sunflower Core API
+
+This repository represents the development code for core components (API/OCSP/CRL).
+
+## Overview
+
+Sunflower API provides the RESTful API to base X.509 possibilities like issuing and revoking certificates, making CSR, and generating different types of keys. It also provides CRL-files serving and OCSP responder for online certificate status checking.
+
+## Requirements
+
+- Python 3.8+
+- Runs well in containers (Dockerfiles are provided) & Kubernetes ready
+
+
+## Running in development mode
+
+1. First, install Pipenv and dependencies:
+
+```bash
+pip install --user pipenv
+pipenv install
+pipenv install --dev
+```
+
+2. Copy the `.env.example` file to `.env` and fill in your credentials for PostgreSQL and Celery (consider PostgreSQL and Redis servers are already started and available).
+
+3. Activate the environment and run the project by executing `pyton manage.py runserver` command.
+
+4. If you want to Celery tasks be able to execute run commands `python -m celery -A core worker -l info` & `python -m celery -A core beat -l info` in the separate shells.
+
+
+## Documentation
+
+Documentation is available online at [https://docs.sunflower3455.com/](https://docs.sunflower3455.com/) and in the [docs](https://github.com/sunflower-ing/docs) repository.
+
+## Releases
+
+You can check [https://github.com/sunflower-ing/core/releases](https://github.com/sunflower-ing/core/releases) for the releases and release notes.
+
+## Contributing
+
+If you'd like to contribute to this project please follow the [Issues](https://github.com/sunflower-ing/core/issues)