Update readme

README.md

@@ -1,9 +1,99 @@
 # lodge
 
-A simple log lib configurable by env vars
+A structured logging package in Python simple to use.
 
+## Features
+
+* Easy to use
+* Env var configurations
+* Structured production log ready!
+* Options to customize fields
+* Set log level by module
+* Based on stdlib
+
+## Install
+
+Add to your setup as:
+```python
+  ...
+  " lodge @ https://github.com/NeowayLabs/lodge.git@<VERSION>#egg=lodge",
+  ...
+```
+or install with pip
+```
+pip install git+https://github.com/NeowayLabs/lodge.git
+```
+
+## Getting Started
+
+```python
+>>> from lodge import logger
+
+>>> logger.info("Is that simple?")
+{"message": "Is that simple?", "timestamp": "2021-03-21 14:26:54,838", "level": "INFO"}
+```
+
+### Global level with env var config
+
+```python
+$ export LOG_LEVEL=ERROR
+
+>>> from lodge import logger
+
+>>> logger.info("This will not appear")
+>>> logger.error("Oh no")
+{"message": "Oh no", "timestamp": "2021-03-21 14:26:54,839", "level": "ERROR"}
+```
+
+### Module level with env var config
+
+```python
+$ export PACKAGE_MODULE1_LOG_LEVEL=ERROR
+$ export PACKAGE_MODULE2_LOG_LEVEL=INFO
+
+# package/module1.py
+>>> from lodge import logger
+
+>>> logger.info("Module 1 info")
+>>> logger.error("Module 1 error")
+{"message": "Module 1 error", "timestamp": "2021-03-21 14:26:54,839", "level": "ERROR"}
+
+# package/module2.py
+>>> from lodge import logger
+
+>>> logger.info("Module 2 info")
+{"message": "Module 2 info", "timestamp": "2021-03-21 14:26:54,839", "level": "INFO"}
+>>> logger.error("Module 2 error")
+{"message": "Module 2 error", "timestamp": "2021-03-21 14:26:54,839", "level": "ERROR"}
+```
+
+### Change format to easier read on development
 ```python
-from lodge import log
+$ export LOG_ENV=DEV
+
+# package/module1.py
+>>> from lodge import logger
+
+>>> logger.info("a message")
+2021-03-21 14:34:47,273 | INFO | package.module1 | a message
+```
+
+### Add extra fields
+```python
+$ export LOG_EXTRA_FIELDS='{"fausto":"olokinho"}'
+
+>>> from lodge import logger
+
+>>> logger.info("o loko")
+{"message": "o loko", "timestamp": "2021-03-21 14:45:51,431", "level": "INFO", "fausto": "olokinho"}
+```
+
+### Overwrite base fields
+```python
+$ export LOG_BASE_FIELDS='{"message":"%(message)s"}'
+
+>>> from lodge import logger
 
-log.info("Something important")
+>>> logger.info("simple message")
+{"message": "simple message"}
 ```