Fix setup.py syntax

setup.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+import os
 from setuptools import setup
 
 CLASSIFIERS = [
@@ -12,11 +13,17 @@
     'Programming Language :: Python :: 3.8',
     'Topic :: Software Development :: Libraries :: Python Modules']
 
+README_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), "README.md")
+with open(README_PATH, "r", encoding="utf8") as f:
+    README = f.read()
+
 setup(
     name='prices',
     author='Mirumee Software',
     author_email='[email protected]',
     description='Python price handling for humans',
+    long_description=README,
+    long_description_content_type="text/markdown",
     license='BSD',
     version='1.1.1',
     url='https://github.com/mirumee/prices',