Add long description for PyPI and newly supported Python versions.

setup.py

@@ -5,10 +5,15 @@
 with open(join(dirname(abspath(__file__)), 'requirements.txt')) as f:
     requirements = f.readlines()
 
+with open("README.md", "r") as fh:
+    long_description = fh.read()
+
 setup(
     name='padatious',
     version='0.4.8',  # Also change in padatious/__init__.py
     description='A neural network intent parser',
+    long_description=long_description,
+    long_description_content_type="text/markdown",
     url='http://github.com/MycroftAI/padatious',
     author='Matthew Scholefield',
     author_email='matthew331199@gmail.com',
@@ -34,6 +39,8 @@
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
     ],
     entry_points={
         'console_scripts': [