Use README.md for long description (#55)

* Use README.md for long description
* Dont use encoding in open for py2 support
* Add short description and bump version
* Update description string

Makefile

@@ -50,17 +50,5 @@ test: install
 	pytest
 
 .PHONY: upload
-upload: build check-env
-	twine upload --repository-url ${REPO} --username ${USER} --password "${PASSWORD}" dist/*
-
-.PHONY: check-env
-check-env:
-ifndef REPO
-	$(error $REPO must be specified)
-endif
-ifndef USER
-	$(error USER must be specified)
-endif
-ifndef PASSWORD
-	$(error PASSWORD must be specified)
-endif
+upload: build
+	twine upload wheelhouse/* $(sdist)

setup.py

@@ -2,13 +2,19 @@
 
 from setuptools import setup, Extension
 
+with open("README.md", "r") as fh:
+    long_description = fh.read()
+
 setup(
     name="pypredict",
-    version="1.6.2",
+    version="1.6.3",
     author="Jesse Trutna",
     author_email="jesse@spire.com",
     maintainer="Spire Global Inc",
     maintainer_email="opensource@spire.com",
+    description="Interface to the Predict satellite tracking and orbital prediction library",
+    long_description=long_description,
+    long_description_content_type="text/markdown",
     url="https://github.com/nsat/pypredict",
     py_modules=["predict"],
     ext_modules=[Extension("cpredict", ["predict.c"])],