Making storage subpackage into a proper package.

- Adding README, setup.py, MANIFEST.in, .coveragerc and tox.ini
- Adding google-cloud-storage as a dependency to the umbrella
  package
- Adding the storage subdirectory into the list of packages
  for verifying the docs
- Incorporating the storage subdirectory into the umbrella
  coverage report
- Adding the storage only tox tests to the Travis config
- Adding {toxinidir}/../core as a dependency for the storage
  tox config

.coveragerc

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+[run]
+branch = True
+
+[report]
+fail_under = 100
+show_missing = True
+exclude_lines =
+    # Re-enable the standard pragma
+    pragma: NO COVER
+    # Ignore debug-only repr
+    def __repr__

MANIFEST.in

@@ -0,0 +1,4 @@
+include README.rst
+graft google
+graft unit_tests
+global-exclude *.pyc

README.rst

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+Python Client for Google Cloud Storage
+======================================
+
+    Python idiomatic client for `Google Cloud Storage`_
+
+.. _Google Cloud Storage: https://cloud.google.com/storage/docs
+
+-  `Homepage`_
+-  `API Documentation`_
+
+.. _Homepage: https://googlecloudplatform.github.io/google-cloud-python/
+.. _API Documentation: http://googlecloudplatform.github.io/google-cloud-python/
+
+Quick Start
+-----------
+
+::
+
+    $ pip install --upgrade google-cloud-storage
+
+Authentication
+--------------
+
+With ``google-cloud-python`` we try to make authentication as painless as
+possible. Check out the `Authentication section`_ in our documentation to
+learn more. You may also find the `authentication document`_ shared by all
+the ``google-cloud-*`` libraries to be helpful.
+
+.. _Authentication section: http://google-cloud-python.readthedocs.io/en/latest/google-cloud-auth.html
+.. _authentication document: https://github.com/GoogleCloudPlatform/gcloud-common/tree/master/authentication
+
+Using the API
+-------------
+
+Google `Cloud Storage`_ (`Storage API docs`_) allows you to store data on
+Google infrastructure with very high reliability, performance and
+availability, and can be used to distribute large data objects to users
+via direct download.
+
+.. _Cloud Storage: https://cloud.google.com/storage/docs
+.. _Storage API docs: https://cloud.google.com/storage/docs/json_api/v1
+
+See the ``google-cloud-python`` API `storage documentation`_ to learn how to
+connect to Cloud Storage using this Client Library.
+
+.. _storage documentation: https://googlecloudplatform.github.io/google-cloud-python/stable/storage-client.html
+
+You need to create a Google Cloud Storage bucket to use this client library.
+Follow along with the `official Google Cloud Storage documentation`_ to learn
+how to create a bucket.
+
+.. _official Google Cloud Storage documentation: https://cloud.google.com/storage/docs/cloud-console#_creatingbuckets
+
+.. code:: python
+
+    from google.cloud import storage
+    client = storage.Client()
+    bucket = client.get_bucket('bucket-id-here')
+    # Then do other things...
+    blob = bucket.get_blob('remote/path/to/file.txt')
+    print(blob.download_as_string())
+    blob.upload_from_string('New contents!')
+    blob2 = bucket.blob('remote/path/storage.txt')
+    blob2.upload_from_filename(filename='/local/path.txt')

setup.py

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+# Copyright 2016 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+from setuptools import find_packages
+from setuptools import setup
+
+
+PACKAGE_ROOT = os.path.abspath(os.path.dirname(__file__))
+
+with open(os.path.join(PACKAGE_ROOT, 'README.rst')) as file_obj:
+    README = file_obj.read()
+
+# NOTE: This is duplicated throughout and we should try to
+#       consolidate.
+SETUP_BASE = {
+    'author': 'Google Cloud Platform',
+    'author_email': 'jjg+google-cloud-python@google.com',
+    'scripts': [],
+    'url': 'https://github.com/GoogleCloudPlatform/google-cloud-python',
+    'license': 'Apache 2.0',
+    'platforms': 'Posix; MacOS X; Windows',
+    'include_package_data': True,
+    'zip_safe': False,
+    'classifiers': [
+        'Development Status :: 4 - Beta',
+        'Intended Audience :: Developers',
+        'License :: OSI Approved :: Apache Software License',
+        'Operating System :: OS Independent',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Topic :: Internet',
+    ],
+}
+
+
+REQUIREMENTS = [
+    'google-cloud-core',
+]
+
+setup(
+    name='google-cloud-storage',
+    version='0.20.0dev',
+    description='Python Client for Google Cloud Storage',
+    long_description=README,
+    namespace_packages=[
+        'google',
+        'google.cloud',
+    ],
+    packages=find_packages(),
+    install_requires=REQUIREMENTS,
+    **SETUP_BASE
+)

tox.ini

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+[tox]
+envlist =
+    py27,py34,py35,cover
+
+[testing]
+deps =
+    {toxinidir}/../core
+    pytest
+covercmd =
+    py.test --quiet \
+      --cov=google.cloud.storage \
+      --cov=unit_tests \
+      --cov-config {toxinidir}/.coveragerc \
+      unit_tests
+
+[testenv]
+commands =
+    py.test --quiet {posargs} unit_tests
+deps =
+    {[testing]deps}
+
+[testenv:cover]
+basepython =
+    python2.7
+commands =
+    {[testing]covercmd}
+deps =
+    {[testenv]deps}
+    coverage
+    pytest-cov