docs: enhance README.md with detailed examples and features for environment loader

fix: update version to 0.2.2 in setup.py
feat: import json in env.py for future enhancements

README.md

@@ -1,24 +1,104 @@
-# multinut
+# `multinut`
 
-The multitool nobody asked for. Includes stuff and so
+The multitool nobody asked for. Includes stuff and so.
 
 ---
 
 ## `multinut.env`
 
 A simple but flexible environment loader.
+
 Supports `.env` file parsing with optional mode suffixes (e.g. `.env.production`, `.env.testing`, etc.), lazy loading, and dynamic access.
 
-Useful when:
+### Features
 
-* You want a single class that can load environment configs based on mode (`development`, `production`, etc.)
-* You need access via `env["KEY"]`, `env.get("KEY")`, or even `env.KEY`
-* You want optional type casting and sane default handling
-* You *don’t* want `os.environ` to be touched
+* Mode-based config support (`.env.production`, `.env.testing`, etc.)
+* Access via:
+
+  * `env["KEY"]`
+  * `env.get("KEY", ...)`
+  * `env.KEY`
+* Optional type casting (`str`, `bool`, `list`, `dict`, etc.)
+* Sane default handling
+* Does **not** mutate `os.environ`
+
+---
 
 ### Use cases
 
 * Loading `.env` files in mode-aware Python projects
 * Separating secrets and configs by deployment context
-* Dynamically reading values like `env.DB_URL`, `env.get("DEBUG", default=False, cast=bool)`
-* Avoiding external dependencies beyond `python-dotenv`
+* Dynamically reading values like `env.DB_URL`, `env.get("DEBUG", default=False, cast=cast_bool)`
+* Avoiding `os.environ` pollution
+
+---
+
+### Basic Example
+
+```python
+from multinut.env import Environment, Modes
+
+env = Environment(env_file_name=".env", mode=Modes.DEVELOPMENT)
+
+print(env.get("DEBUG", default=False))
+print(env["API_KEY"])
+print(env.DB_URL)
+```
+
+Given a `.env.development` file:
+
+```env
+DEBUG=true
+API_KEY=secret
+DB_URL=https://example.com
+```
+
+---
+
+### Smart Casts Example
+
+```python
+from multinut.env import (
+    Environment, cast_bool, cast_int, cast_float,
+    cast_list, cast_tuple, cast_dict, cast_none_or_str
+)
+
+env = Environment()
+
+print("INT:", env.get("PORT", cast=cast_int))                      # -> int
+print("FLOAT:", env.get("PI", cast=cast_float))                    # -> float
+print("BOOL:", env.get("ENABLED", cast=cast_bool))                 # -> bool
+print("LIST:", env.get("NUMBERS", cast=cast_list))                 # -> list[str]
+print("TUPLE:", env.get("WORDS", cast=cast_tuple))                 # -> tuple[str]
+print("DICT:", env.get("CONFIG", cast=cast_dict))                  # -> dict
+print("NONE_OR_STR:", env.get("OPTIONAL", cast=cast_none_or_str))  # -> None or str
+```
+
+Example `.env`:
+
+```env
+PORT=8080
+PI=3.1415
+ENABLED=yes
+NUMBERS=1,2,3
+WORDS=hello,world,test
+CONFIG={"timeout": 30, "debug": true}
+OPTIONAL=null
+```
+
+### Included Cast Helpers
+
+All built-in cast functions handle common edge cases:
+
+| Cast Function      | Description                                 |
+| ------------------ | ------------------------------------------- |
+| `cast_str`         | Ensures string                              |
+| `cast_int`         | Converts to integer                         |
+| `cast_float`       | Converts to float                           |
+| `cast_bool`        | Accepts `1`, `true`, `yes`, `on`, etc.      |
+| `cast_list`        | Comma-split list                            |
+| `cast_tuple`       | Comma-split, converted to tuple             |
+| `cast_dict`        | Parses JSON string into dictionary          |
+| `cast_none_or_str` | Returns `None` if value is `null` or `None` |
+
+---

multinut/env.py

@@ -2,6 +2,7 @@ import os.path as op
 from typing import Optional, Callable, Any
 from enum import Enum
 from dotenv import dotenv_values
+import json
 
 NO_DEFAULT = object()  # Used to indicate no default value was provided
 

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='multinut',
-    version='0.2.1.post1',
+    version='0.2.2',
     packages=find_packages(),
     install_requires=["dotenv"],
     author='Chipperfluff',