Always load sync.config initializer if Rails loaded; Fixes #30

I'm not 100% sure what this does. But I got it from this (now down) [posterous post](
http://webcache.googleusercontent.com/search?q=cache:MMdPCUxEjzgJ:timcardenas.com/how-to-develop-engines-that-compile-assets-on+&cd=1&hl=en&ct=clnk&gl=us)

I'm guessing it forces loading the initializer when rails is loaded. Seems to fix the problem.

Fixes #30.