setup: Add long description to py module

let's include our README into setuptools long description.

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>

Author: ldoktor

setup.py

@@ -17,13 +17,23 @@
 
 from setuptools import setup
 
+
+def get_long_description():
+    """Returns the content of README.rst"""
+    with open("README.rst", "r", encoding="utf-8") as req:
+        req_contents = req.read()
+    return req_contents
+
+
 if __name__ == "__main__":
     setup(
         name="aexpect",
         version="1.8.0",
         description="Aexpect",
         author="Aexpect developers",
         author_email="avocado-devel@redhat.com",
+        long_description=get_long_description(),
+        long_description_content_type="text/markdown",
         url="http://avocado-framework.github.io/",
         license="GPLv2+",
         classifiers=[