Have startaws wait until instance starts

[benthayer]

This would be a simple loop that checks to see if the result of awsip is null

Current output of startaws

{
    "StartingInstances": [
        {
            "CurrentState": {
                "Code": 0,
                "Name": "pending"
            },
            "InstanceId": "there would be stuff here",
            "PreviousState": {
                "Code": 80,
                "Name": "stopped"
            }
        }
    ]
}

New output

$ startaws large
Previous state: stopped
Current state: pending
Waiting...
Waiting...
Waiting...
Waiting...
Instance large started with ip "127.0.0.1"