Include nginx recipe
Add ruby-shadow

Complained when creating a user that ruby-shadow is required.
Remove commented code
Use 1.8 hash syntax
Fix symlinks
Syntax cleanup
Don't ignore bundler failures
Timestamped deploys over revision deploys

Ensure we run the deploy each time.
Rename unicorn.conf to unicorn.rb
Spacing to make things easier to read
Fix email_at_notices option in config template
Create custom secret_token.rb initializer

The errbit_env script was not correctly setting SECRET_TOKEN in the
environment. Rather than debug that, it is easier to create a
file and symlink it.
No unicorn workers if :worker_processes is 0