Distribute boto3.s3 in PyPI

[kislyuk]

The example in https://github.com/boto/boto3#quick-start doesn't work with https://pypi.python.org/pypi/boto3/0.0.14 without this.

[kislyuk]

NB if you don't want to have to change setup.py every time you add a directory, do this in setup.py instead:

from setuptools import setup, find_packages
...
setup(
    ...
    packages = find_packages(exclude=['tests']),
)

[coveralls]

Coverage remained the same at 96.93% when pulling a974936 on kislyuk:patch-1 into 9030218 on boto:develop.

[danielgtaylor]

@kislyuk thanks for the fix! 👍