Updating and fixing example config files for 0.7 so that README can be f...

- Updated config.js from 0.7 tarball so that more documentation is in place.
  Preserved host in case people are relying on that
- Copied exampleProxyConfig.js verbatim fron 0.7 tar ball
- Replaced line in readme where exampleConfig.js was referenced, preferring
  to simply copy config.js instead

(sorry for the confusion and duplicate PRs, I didn't realize github would append my PR with my new, unrelated commits)