Update readme & setup.py: make project installable from pypi again

README.md

@@ -7,7 +7,7 @@ Never use code in this repo if you don't trust your players!
 1. Download and install wheel from github releases
 
     ```sh
-    pip install computercraft-*.whl
+    pip install computercraft
     ```
 
 2. Enable localhost in mod server config

setup.py

@@ -1,20 +1,8 @@
+from pathlib import Path
 from setuptools import setup
-from sys import argv
 
 
-def is_register_command(a):
-    for item in a:
-        if item.startswith('-'):
-            continue
-        return item in ('register', 'bdist_wheel')
-    return False
-
-
-longdesc = None
-if is_register_command(argv[1:]):
-    import os
-    with os.popen('pandoc -f markdown_github -t rst README.md') as f:
-        longdesc = f.read()
+longdesc = (Path(__file__).parent / 'README.md').read_text()
 
 
 setup(
@@ -22,6 +10,7 @@ setup(
     version='0.3.0',
     description='Pythonization of ComputerCraft Minecraft mod. Write Python instead Lua!',
     long_description=longdesc,
+    long_description_content_type='text/markdown',
     url='https://github.com/neumond/python-computer-craft',
     author='Vitalik Verhovodov',
     author_email='knifeslaughter@gmail.com',
@@ -30,7 +19,6 @@ setup(
         'Development Status :: 3 - Alpha',
         'Intended Audience :: Education',
         'License :: OSI Approved :: MIT License',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Topic :: Games/Entertainment',