Updates README.md to add pinouts for both the Rev1 & Rev2 Raspberry Pis.
Merge pull request #47 from rringler/enhancement/readme.md-pinouts

Updates README.md to add pinouts for both the Rev1 & Rev2 Raspberry Pis.
Revert "Add a Bitdeli badge to README"

This reverts commit fefa50549940f7cd675e0c1ed475d67899f285d6.
Allow customization of Vagrant port
Install avahi packages without prompting
Build and copy gem to Vagrant box
Test against localhost instead of 127.0.0.1