added disk update and delete api
added apis for actions on vapps
slight cleanup to generic error handler
Added create/delete support for VPC's network ACLs.
Fixed the request hash to the right format for the API call.
Removed a debugger trace from the code.
Merge pull request #13 from lvalerio/route_tables

Route tables
removed commented out include of fog gem
added more vcloud compute apis
added get network by id api
Merge pull request #14 from bears4barrett/vcloud_api_additions

Vcloud api additions