.gitingnore, setting hostname, +x downlaod_files, order of hosts...

[dolanjs]

• added a .gitignore file to not ignore .vagrant and .tar.gz files so you don't accidently add the puppetenterprise tar.gz downlaoded files
• removed setting the hostname in the provisioning scripts to make it easier to add more hosts to the Vagranfile using the same provisioning script
• did some other things... changed IP so that each type of system (precise_master, precise_node, lucid_node) have their own class IP 192.168.9.9 192.168.10.10 192.168.11.10
• changed order of the servers in Vagrantfile so the puppetmaster would be the first to boot
• removed the old README file
• changed permissions on the download_files file to +x
• should of broken each up into it's own commit but I'm still learning....