Add PyPi package long description (#104)

Author: Adminiuga

setup.py

@@ -1,13 +1,21 @@
 """Setup module for zigpy-deconz"""
 
+import os
+
 from setuptools import find_packages, setup
 
 import zigpy_deconz
 
+this_directory = os.path.join(os.path.abspath(os.path.dirname(__file__)))
+with open(os.path.join(this_directory, "README.md"), encoding="utf-8") as f:
+    long_description = f.read()
+
 setup(
     name="zigpy-deconz",
     version=zigpy_deconz.__version__,
     description="A library which communicates with Deconz radios for zigpy",
+    long_description=long_description,
+    long_description_content_type="text/markdown",
     url="http://github.com/zigpy/zigpy-deconz",
     author="Daniel Schmidt",
     author_email="[email protected]",