Update setup file and project metadata

Author: James K. Glasbrenner

.gitignore

@@ -349,6 +349,7 @@ local_settings.py
 nosetests.xml
 pip-log.txt
 pip-delete-this-directory.txt
+*.egg-info/
 __pycache__/
 develop-eggs/
 docs/_build/

MANIFEST.in

@@ -0,0 +1,8 @@
+include README.rst LICENSE
+
+graft docs
+
+global-exclude *.py[co]
+
+prune docs/_build
+prune docs/_themes

setup.py

@@ -1,8 +1,14 @@
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from collections import OrderedDict
 
 import setuptools
 from sphinx.setup_command import BuildDoc
 
+with open('README.rst', 'rt', encoding='utf8') as f:
+    readme = f.read()
+
 name = "neighbormodels"
 version = "0.0"
 release = "0.0.1"
@@ -13,19 +19,29 @@
     author_email="[email protected]",
     license="MIT",
     version=release,
+    url="https://github.com/jkglasbrenner/datamaterials-neighbormodels",
+    project_urls=OrderedDict((
+        ("Documentation", "https://neighbormodels.readthedocs.io"),
+        ("Code", "https://github.com/jkglasbrenner/datamaterials-neighbormodels"),
+    )),
     description=(
         "A tool for building crystal lattice models with distance-dependent "
         "neighbor interactions."
     ),
+    long_description=readme,
     python_requires=">=3.6",
-    packages=setuptools.find_packages("src"),
-    package_dir={"": "src"},
+    packages=setuptools.find_packages(),
     include_package_data=True,
     install_requires=[
         "numpy",
         "pandas",
         "pymatgen",
     ],
+    extras_require={
+        "docs": [
+            "sphinx",
+        ],
+    },
     cmdclass={"build_sphinx": BuildDoc},
     command_options={
         "build_sphinx": {