Allow specifying the AWS availability zone on creation
providers/aws: db instance wait for destroy, allow destroy config
makefile: increase acceptance test timeout
update changelog
Merge pull request #129 from dcosson/aws_availability_zone

Allow specifying the AWS availability zone on creation
update changelog
providers/aws: add tests for instance availability zone

cc/ @dcosson here we go!
Fix a minor typo in the README.
Merge pull request #132 from jlund/typo

Fix a minor typo in the README.
Merge branch 'master' of https://github.com/hashicorp/terraform