Add broken implementation
closes #17 Stop instances
closes #14 reboot instances
add support for sha1 signatures
fix whitespace issue
fix unit tests
Complete volume attachment / detachment
Merge branch 'master' of github.com:imduffy15/ec2stack into volume_attachment
Merge pull request #45 from imduffy15/volume_attachment

Volume attachment
Add unit tests
Merge branch 'master' of github.com:imduffy15/ec2stack

* 'master' of github.com:imduffy15/ec2stack:
  Complete volume attachment / detachment
  Add broken implementation
closes #41 take in aws attributes and convert if valid.
Merge branch 'master' of github.com:imduffy15/ec2stack
Add attach / detach tests
Improve test coverage
Fix typo in volume_tests
Merge branch 'master' into run-instance

* master:
  Fix typo in volume_tests
  Improve test coverage
  Add attach / detach tests
  closes #41 take in aws attributes and convert if valid.
  Add unit tests
  Complete volume attachment / detachment
  fix unit tests
  fix whitespace issue
  add support for sha1 signatures
  closes #14 reboot instances
  closes #17 Stop instances
  Add broken implementation

Conflicts:
	tests/instances_tests.py
Format code