Add long_description_content_type="text/markdown" and edit shields

Author: hoffmang9

README.md

@@ -1,14 +1,13 @@
 # Chia VDF
 ![Build](https://github.com/Chia-Network/chiavdf/workflows/Build/badge.svg)
-[![Total alerts](https://img.shields.io/lgtm/alerts/g/Chia-Network/chiapos.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Chia-Network/chiapos/alerts/)
-[![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/Chia-Network/chiapos.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Chia-Network/chiapos/context:python)
-[![Language grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/Chia-Network/chiapos.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Chia-Network/chiapos/context:cpp)
-
 ![PyPI](https://img.shields.io/pypi/v/chiapos?logo=pypi)
-![PyPI - Implementation](https://img.shields.io/pypi/implementation/chiapos?logo=pypi)
 ![PyPI - Wheel](https://img.shields.io/pypi/wheel/chiapos?logo=pypi)
 ![GitHub](https://img.shields.io/github/license/Chia-Network/chiapos?logo=Github)
 
+[![Total alerts](https://img.shields.io/lgtm/alerts/g/Chia-Network/chiapos.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Chia-Network/chiapos/alerts/)
+[![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/Chia-Network/chiapos.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Chia-Network/chiapos/context:python)
+[![Language grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/Chia-Network/chiapos.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Chia-Network/chiapos/context:cpp)
+
 ## Building
 ```
 pip install wheel setuptools_scm

setup.py

@@ -264,6 +264,7 @@ def build_extensions(self):
         license='Apache License',
         python_requires='>=3.5',
         long_description=open('README.md').read(),
+        long_description_content_type="text/markdown",
         ext_modules=[CMakeExtension('chiavdf', 'src')],
         cmdclass=dict(build_ext=CMakeBuild, install_hook=install_hook, build_hook=build_hook),
         zip_safe=False,