Added instructions

Author: pcko1

README.md

@@ -1,7 +1,6 @@
 [![Build Status](https://travis-ci.com/pcko1/etherscan-python.svg?branch=master)](https://travis-ci.com/pcko1/etherscan-python) 
 [![codecov](https://codecov.io/gh/pcko1/etherscan-python/branch/master/graph/badge.svg)](https://codecov.io/gh/pcko1/etherscan-python)
 [![Python 3.8](https://img.shields.io/badge/python-3.8-blue.svg)](https://www.python.org/downloads/release/python-385/)
-
 ![GitHub](https://img.shields.io/github/license/pcko1/etherscan-python)
 
 # etherscan-python
@@ -42,7 +41,7 @@ conda activate etherscan-python && bash run_tests.sh
 
 ## Usage
 
-In `python` , create a client with your personal etherscan.io API key:
+In `python`, create a client with your personal etherscan.io API key:
 
 ``` python
 from etherscan.client import Client