Add generated documentation for route53/zone
Remove generated documentation for implenentation classes route53/exception and route53/hostedzone
Restore exception documentation
Merge pull request #1837 from phickey/develop

Generate docs for route53/zone, remove docs for route53/hostedzone. Fixes #1837.
Fixed parameter order in test

Params were around the wrong way. Test was passing coincidentally.
Issue #1843: replace correct ACL association

Fixes problem where an ACL is associated with multiple subnets, and
associate_network_acl replaces a random other subnet's association
to the ACL.
relay the error code and message from Amazon to application
Added tests for the Cloudsearch changes. Finishes #1842.
Shuffled the test to unit, since it's not actually hitting the service.
Merge branch 'expose-cs-errors' into develop
Bumped reqs to use a higher version of HTTPretty.
Merge pull request #1844 from drrb/issue-1843

Replace correct VPC ACL association instead of just the first one. Fixes #1844, #1843.
Add detach_vpn_gateway, add VPN gateway tests
Add VGW Route propagation tests
Add VPC internet gateway tests
Move VPC network acl tests to own file
Add VPC DHCP options tests
DeleteVpc and ModifyVpcAttribute tests, PEP8
Add VPC subnet tests
Add CustomerGateway tests, PEP8, fix bgp_asn type
VPC RouteTable fixes and tests, pep8

* Return newAssociationId in replace_route_table_assocation
* Allow create_route to take network interface_id