Adds initial test framework; adds PrivateKey.from_nsec() (#13)

* Adds initial test framework; adds PrivateKey.from_nsec()

* Update setup.py

setup.py

@@ -0,0 +1,21 @@
+from setuptools import setup, find_packages
+
+
+with open("README.md", "r") as f:
+    long_description = f.read()
+
+setup(
+    name='nostr',
+    version="0.0.1",
+    packages=find_packages(include=['nostr']),
+    python_requires='>3.6.0',
+    url='https://github.com/jeffthibault/python-nostr',
+    description="A Python library for making Nostr clients.",
+    long_description=long_description,
+    long_description_content_type="text/markdown",
+    classifiers=[
+        'Operating System :: POSIX :: Linux',
+        'Operating System :: Microsoft :: Windows',
+        'Operating System :: MacOS :: MacOS X',
+    ],
+)