This project is very much WIP

It is intended to be a site/app/whatever to allow me to better manage
and automate EC2 instances, images, keys, etc.  Currently it handles a
good bit of the actual instance logic - spinning up servers from a given
AMI, with an access key either specified or (by default) newly created.
And it fully ties in the aws-ec2 sdk classes, so you can have full 
control over every aspect of the Instance, Image, and KeyPair instances.
It can also run SSH commands against those Instances, and there is a 
BuildScript model with a `run` method that will run an arbitrary length 
script against a model and continuously print its output.  Of course, 
it does not accept any input.  It seems to work fully, though, given 
the right script input.

It also generally manages to auto-detect an Ubuntu AMI, which opens up
the option to copy the authorized_keys file from /home/ubuntu to /root.
If you've ever used an official Ubuntu EC2 image, you know why.

What it does not do (yet):

* Have any controllers or views.
* Anything useful, really, outside of irb.  Even that is spurious.

What it does do:

    instance=Ec2Ami.find('ami-some_aws_id').run_server
    # wait for it to come up, otherwise you'll get an exception
    instance.fix_username!
    #It's got a bang on it because it'll make a change to the model
    #But it should be safe to run, even on non-Ubuntu machines.
    BuildScript.find('whatever').run(instance)
    instance.key_pair.save_file('/home/you/my_new_key.pem')
    File.open('/home/you/ssh_connect.sh','wb') {|f| f.write("ssh root@#{instance.dns_name} -i /home/you/my_new_key.pem")}