Add long description

Author: lkarjun

setup.py

@@ -6,6 +6,8 @@
     author = "Lalkrishna",
     url = "arju66938@gmail.com",
     description = "Mount Azure blob storage in google colab.",
+    long_description = open('README.md').read(),
+    long_description_content_type = 'text/markdown',
     py_modules=['mount_azure_blob'],
     install_requires = "ipywidgets",
     python_requires = ">=3.7",