Update README and setup for release on PyPI.

README.md

@@ -5,8 +5,6 @@ Based on idl_mommaps: https://github.com/tonywong94/idl_mommaps
 
 Required packages: [spectral_cube](https://spectral-cube.readthedocs.io/), [radio_beam](https://radio-beam.readthedocs.io/), [astropy](https://www.astropy.org), [scipy](https://www.scipy.org)
 
-**Note:** A serious error was uncovered on 9-Jun-2020 where the emom0 image was not being scaled to K, even though it was labeled as K km/s.  Please update any results obtained with code from before that time.
-
 How to use:
 
     from maskmoment import maskmoment

pyproject.toml

@@ -0,0 +1,6 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel"
+]
+build-backend = "setuptools.build_meta"

setup.py

@@ -1,8 +1,16 @@
+import setuptools
+
+with open("README.md", "r", encoding="utf-8") as fh:
+    long_description = fh.read()
+
 from setuptools import setup
 
-setup(name='maskmoment',
-    version='1.1',
+setuptools.setup(
+    name='maskmoment',
+    version='1.1.1',
     description='Masked moments of radio data cubes',
+    long_description=long_description,
+    long_description_content_type="text/markdown",
     author='Tony Wong',
     author_email = 'tonywong94@gmail.com',
     install_requires = ['numpy>=1.8.0',
@@ -12,4 +20,9 @@
                         'spectral_cube'],
     url='https://github.com/tonywong94/maskmoment',
     packages=['maskmoment'],
-    )
+    classifiers=[
+        "Programming Language :: Python :: 3",
+        "License :: OSI Approved :: MIT License",
+        "Operating System :: OS Independent",
+    ],
+)