Add long_description that was missed in last release

setup.py

@@ -31,6 +31,11 @@
         pass
     fh.write("platform_machine = '%s'\n" % platform.machine())
 
+# Read the contents of the README file
+this_directory = os.path.abspath(os.path.dirname(__file__))
+with open(os.path.join(this_directory, 'README.rst'), encoding='utf-8') as f:
+    long_description = f.read()
+
 lib_dirs = []
 inc_dirs = [np.get_include()]
 libs = []  # Pre-built libraries ONLY, like python36.so
@@ -101,6 +106,8 @@ def setup_package():
 
     metadata = dict(
         version=version,
+        long_description=long_description,
+        long_description_content_type='text/x-rst',
         install_requires=requirements,
         libraries=clibs,
         ext_modules=[