Add setup.py (see examples of subpackages)

- pip install -e .
- pip install -e '.[cpu]'
- pip install -e '.[title]'
- pip install -e '.[title,weather]'

See also: https://setuptools.readthedocs.io/en/latest/setuptools.html#declaring-extras-optional-features-with-their-own-dependencies

setup.py

@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+# -*- coding: utf8 - *-
+import sys
+
+from setuptools import setup
+
+about = {}
+with open("bumblebee/__about__.py") as fp:
+    exec(fp.read(), about)
+
+with open('requirements/base.txt') as f:
+    install_reqs = [line for line in f.read().split('\n') if line]
+
+# Module packages
+def read_module(filename):
+    with open('requirements/modules/{}.txt'.format(filename)) as f:
+        return [line for line in f.read().split('\n') if line]
+
+EXTRAS_REQUIREMENTS_MAP = {
+    "battery-upower": read_module("battery_upower_reqs"),
+    "cpu": read_module("cpu"),
+    "cpu2": read_module("cpu2"),
+    "currency": read_module("currency"),
+    "docker_ps": read_module("docker_ps"),
+    "dunst": read_module("dunst"),
+    "getcrypto": read_module("getcrypto"),
+    "git": read_module("git"),
+    "github": read_module("github"),
+    "hddtemp": read_module("hddtemp"),
+    "layout-xkb": read_module("layout_xkb"),
+    "memory": read_module("memory"),
+    "network_traffic": read_module("network_traffic"),
+    "nic": read_module("nic"),
+    "pihole": read_module("pihole"),
+    "rss": read_module("rss"),
+    "spaceapi": read_module("spaceapi"),
+    "spotify": read_module("spotify"),
+    "stock": read_module("stock"),
+    "sun": read_module("sun"),
+    "system": read_module("system"),
+    "taskwarrior": read_module("taskwarrior"),
+    "title": read_module("title"),
+    "traffic": read_module("traffic"),
+    "weather": read_module("weather"),
+    "yubikey": read_module("yubikey"),
+}
+
+if sys.version_info[0] > 2:  # LATER: README needs to be reStructuredText for pypi
+    readme = open('README.md', encoding='utf-8').read()
+else:
+    readme = open('README.md').read()
+
+setup(
+    name=about['__title__'],
+    version=about['__version__'],
+    url=about['__github__'],
+    download_url=about['__pypi__'],
+    project_urls={
+        'Documentation': about['__docs__'],
+        'Code': about['__github__'],
+        'Issue tracker': about['__tracker__'],
+    },
+    license=about['__license__'],
+    author=about['__author__'],
+    author_email=about['__email__'],
+    description=about['__description__'],
+    long_description=readme,
+    packages=['bumblebee'],
+    include_package_data=True,
+    install_requires=install_reqs,
+    extras_require=EXTRAS_REQUIREMENTS_MAP,
+    zip_safe=False,
+    keywords=about['__title__'],
+    classifiers=[
+        'Development Status :: 3 - Alpha',
+        "License :: OSI Approved :: MIT License",
+        'Intended Audience :: Developers',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        "Topic :: Software Development :: Libraries",
+        "Topic :: Software Development :: Internationalization",
+        "Topic :: Utilities",
+    ],
+)