enable cloudformation of NetworkInterface
Update supported services in README.
Add support to filtering instances by source-dest-check
Merge pull request #252 from spulec/source-dest-check-instance-filter

Add support to filtering instances by source-dest-check
Merge pull request #251 from joekiller/cfn_eni

enable cloudformation of NetworkInterface
Implement vpc-id Instance filter
Merge pull request #253 from spulec/instance-filtering-by-vpc-id

Implement vpc-id Instance filter
Implement InternetGateway filters support

More information about IGW filters: http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-DescribeInternetGateways.html#query-DescribeInternetGateways-filters
Move filter logic from responses.InternetGateways to models.InternetGatewayBackend
Move filter logic from responses.InstanceResponse to models.InstanceBackend
Merge pull request #254 from spulec/internet-gateway-filters

Implement InternetGateway filters support
Add missing Id field in route 53 change response.
Report route53 changes immediately as INSYNC.

This avoids leaving changes in a perennial PENDING limbo.
Fix bug with autoscaling in non-default region.

The bug appeared when using a region different than 'us-east-1'
and caused KeyError when accessing launch_configurations.

Rename the global autoscaling backend to reduce chances of similar naming issues.
Tests are added that verify that when a tag is being set on an (EBS) volume or on an instance that upon retrieval
from the resource, the tag are set on the instance.  Important is that the tags are set using create_tags but that
the presence is validated by getting the resource using either (get_all_volumes or get_all_instances).

When running the tests using nosetests it shows that the tags for the instances are correctly retrieved but the tags
for the volume are missing
Extend the DESCRIBE_VOLUMES_RESPONSE to include the tagSet as documented by AWS on http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-ItemType-DescribeVolumesSetItemResponseType.html .  This is needed to pass the test that was added in previous commit.
Extend the DESCRIBE_SNAPSHOTS_RESPONSE to include the tagSet as documented by AWS.  Also refactor the names of the tests I introduced in previous commits to be more descriptive.  Finally some code cleanup, removing the get_tags method from classes and instead inherit from the TaggedEC2Resource class.
Merge pull request #255 from mrucci/route53-missing-response-id

Add missing Id field in route 53 change response.
Merge pull request #256 from mrucci/route53-response-insync

Report route53 changes immediately as INSYNC.
Merge pull request #257 from mrucci/autoscaling-fix-multi-region

Fix bug with autoscaling in non-default region.