Add long_description_content_type to setup

Author: mayeut

setup.py

@@ -58,6 +58,7 @@ def parse_requirements(filename):
     description=r'Ninja is a small build system with a focus on speed',
 
     long_description=readme + '\n\n' + history,
+    long_description_content_type='text/x-rst',
 
     classifiers=[
         'License :: OSI Approved :: Apache Software License',