add long description for PyPI

setup.py

@@ -1,8 +1,12 @@
 from setuptools import setup, find_packages
+from pathlib import Path
 
 __author__ = 'lozuponelab'
 __version__ = '0.6.4'
 
+this_directory = Path(__file__).parent
+long_description = (this_directory / "README.md").read_text()
+
 setup(
       name="SCNIC",
       version=__version__,
@@ -13,6 +17,8 @@
       scripts=['scripts/SCNIC_analysis.py', 'scripts/module_enrichment.py'],
       packages=find_packages(),
       description="A tool for finding and summarizing modules of highly correlated observations in compositional data",
+      long_description=long_description,
+      long_description_content_type='text/markdown',
       author="Lozupone Lab",
       author_email='[email protected]',
       url="https://github.com/lozuponelab/SCNIC/",