Add badges to documentation in README.md.

Author: Davi0kProgramsThings

README.md

@@ -1,5 +1,9 @@
 # bitfinex-api-py
 
+[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/bitfinex-api-py)](https://pypi.org/project/bitfinex-api-py/)
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+![GitHub Action](https://github.com/bitfinexcom/bitfinex-api-py/actions/workflows/build.yml/badge.svg)
+
 Official implementation of the [Bitfinex APIs (V2)](https://docs.bitfinex.com/docs) for `Python 3.8+`.
 
 ### Features
@@ -12,7 +16,7 @@ Official implementation of the [Bitfinex APIs (V2)](https://docs.bitfinex.com/do
 ## Installation
 
 ```console
-python3 -m pip install --pre bitfinex-api-py
+python3 -m pip install bitfinex-api-py
 ```
 
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