Added PyCharm's .idea dir to gitignore
Fixed zone rotation by resolving typo in aws.next_az()
Revert "Added PyCharm's .idea dir to gitignore"

This reverts commit 8a7f17da42a49d74092f2779bd27133320ec4e39.
Merge pull request #18 from onefinestay/fix_zone_rotation

Fix zone rotation