Proper method to deal with markdown in setup.py

README.md

@@ -13,7 +13,7 @@ mapping (SAM) in robotics and vision, using Factor Graphs and Bayes
 Networks as the underlying computing paradigm rather than sparse
 matrices.
 
-The current support matrix is::
+The current support matrix is:
 
 | Platform     | Compiler  | Build Status  |
 |:------------:|:---------:|:-------------:|

python/setup.py.in

@@ -27,6 +27,7 @@ setup(
     author_email='frank.dellaert@gtsam.org',
     license='Simplified BSD license',
     keywords='slam sam robotics localization mapping optimization',
+    long_description_content_type='text/markdown',
     long_description=readme_contents,
     # https://pypi.org/pypi?%3Aaction=list_classifiers
     classifiers=[