Change print() syntax for Python3 compatibility.
Change show_all parameter to my_images in Client.images()
Rename all_ssh_keys() to ssh_keys() for consistency.
Indentation fixes.
Fix typo in rebuild_droplet()
Fix resize_droplet() should return event_id
Add get_status() method to poll event status.
Update README.rst with additional examples and syntax highlighting.
merge @samdobson pull request and minor changes