Add spec.
/ec2/summary and /ec2/control return 200 OK.
Change directory structure.
Move app.rb to lib/aws_portal.rb.
Change main class , from AwsPortal (extends Sinatra::Base) class , to and AwsPortal::Application (extends Sinatra::Base) class.
Move function from AwsPortal::Applicatoin class to module AwsPortal::EC2.
Move path of aws_portal_spec.rb from spec/aws_portal/ to spec/
Add spec for AwsPortal::Ec2.generate_instance_entity method.
Add spec for AwsPortal::Ec2.generate_eip_entities method. And add spec for nil argument.
Merge pull request #10 from betahikaru/feature/addspec

Add specs.