Don't make examples dir a package
Use find_packages instead of explicit package list

We should just automatically find packages we find
in awscli rather than having to manually add them.

Also required setuptools instead of distutils and
change trove classifiers to reflect what we actually
support.
Merge branch 'find-packages' into develop

* find-packages:
  Use find_packages instead of explicit package list
  Don't make examples dir a package