Added codecov badge

README.md

@@ -1,11 +1,12 @@
 # aiogram 3.0 [WIP]
 
+[![\[Telegram\] aiogram live](https://img.shields.io/badge/telegram-aiogram-blue.svg?style=flat-square)](https://t.me/aiogram_live)
 [![MIT License](https://img.shields.io/pypi/l/aiogram.svg?style=flat-square)](https://opensource.org/licenses/MIT)
 [![Supported python versions](https://img.shields.io/pypi/pyversions/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
 [![Telegram Bot API](https://img.shields.io/badge/Telegram%20Bot%20API-5.2-blue.svg?style=flat-square&logo=telegram)](https://core.telegram.org/bots/api)
 [![PyPi Package Version](https://img.shields.io/pypi/v/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
 [![PyPi status](https://img.shields.io/pypi/status/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
 [![Downloads](https://img.shields.io/pypi/dm/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
-[![\[Telegram\] aiogram live](https://img.shields.io/badge/telegram-aiogram-blue.svg?style=flat-square)](https://t.me/aiogram_live)
+[![Codecov](https://img.shields.io/codecov/c/github/aiogram/aiogram?style=flat-square)](https://app.codecov.io/gh/aiogram/aiogram)
 
 **aiogram** modern and fully asynchronous framework for [Telegram Bot API](https://core.telegram.org/bots/api) written in Python 3.7 with [asyncio](https://docs.python.org/3/library/asyncio.html) and [aiohttp](https://github.com/aio-libs/aiohttp). It helps you to make your bots faster and simpler.

docs/index.rst

@@ -37,6 +37,9 @@ aiogram
     :target: https://t.me/aiogram_live
     :alt: [Telegram] aiogram live
 
+.. image:: https://img.shields.io/codecov/c/github/aiogram/aiogram?style=flat-square
+    :target: https://app.codecov.io/gh/aiogram/aiogram
+    :alt: Codecov
 
 **aiogram** modern and fully asynchronous framework for
 `Telegram Bot API <https://core.telegram.org/bots/api>`_ written in Python 3.7 with