Builds/runs and aws instance and reports back to the user through a web
interface. Can be started by either importing start_instance_builder and
calling start(host,port,softwareList,pipelineUrl,test) or from the command 
line with:

$ sudo python2.7 start_instance_builder.py <host> <port> <softwareList> <pipelineUrl> [-test]

where:
            host - host to start server on
            port - port to start server on
    softwareList - no spaces, enclosed in brackets, comma separated list of 
        software to install. (e.g. [software1,software2,software3])
     pipelineUrl - url where pipeline can be downloaded from
           -test - runs server in test mode (only web server)

This script must be run with sudo since there are operations that need to
be done with root permissions.

Requires:
  -Quixote web framework: http://www.quixote.ca/download.html
  -Jinja2 templating: http://jinja.pocoo.org/intro/#installation