Major refactor

- Use run_once cookbook for preventing installation on every chef run
- Build out LWRPs for installation and configuration
- Configuration now is updated without any manual intervention
- Moved to using httparty for downloading the installer
- Instead of bouncing around with multiple rebuilds of the template, render an unencrypted template to a temp file and then encrypt passwords off of that file
- Automatically determine the version number of gads that is installed and put that in the config file