Add readme

Author: insani7y

README.md

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+[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/psqlpy?style=for-the-badge)](https://pypi.org/project/psqlpy/)
+
+# psqlpy-piccolo
+
+This is a third-party Rust engine for [Piccolo ORM](https://github.com/piccolo-orm/piccolo).  
+Under the hood, this engine uses [PSQLPy](https://github.com/qaspen-python/psqlpy), which is Rust-based and blazingly fast 🔥.
+
+## Installation
+
+You can install package with `pip` or `poetry`.
+
+poetry:
+
+```bash
+> poetry add psqlpy-piccolo
+```
+
+pip:
+
+```bash
+> pip install psqlpy-piccolo
+```
+
+## Usage
+
+Usage is as easy as possible.
+PSQLPy based engine has the same interface as other engines from piccolo.
+
+```python
+from psqlpy_piccolo import PSQLPyEngine
+
+
+DB = PSQLPyEngine(
+    config={
+        "host": os.environ.get("PG_HOST", "127.0.0.1"),
+        "port": os.environ.get("PG_PORT", 5432),
+        "user": os.environ.get("PG_USER", "postgres"),
+        "password": os.environ.get("PG_PASSWORD", "postgres"),
+        "database": os.environ.get("PG_DATABASE", "piccolo"),
+    },
+)
+```