docs: added badges to readme (#22)

Author: peter0083

README.md

@@ -1,8 +1,14 @@
-# About
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT) [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/solid-file)](https://pypi.org/project/solid-file/) ![PyPI - Downloads](https://img.shields.io/pypi/dm/solid-file) ![GitHub closed issues](https://img.shields.io/github/issues-closed/twonote/solid-file-python)
+
+# About 
 solid-file-python is a Python library for creating and managing files and folders in Solid pods.
 
 Read and try it on [jupiter notebook](https://github.com/twonote/solid-file-python/blob/master/solid-file-python-getting-start.ipynb) now!
 
+# What is Solid?
+
+Solid is a specification that lets people store their data securely in decentralized data stores called Pods. Learn more about Solid on [solidproject.org](https://solidproject.org/).
+
 # Credit
 This project is inspired by (and porting from) [jeff-zucker/solid-file-client](https://github.com/jeff-zucker/solid-file-client)
 I want to thank the original authors and the community who worked to build that lovely project for Solid ecosystem.