Reference architecture should be deployable to any region

[jpignata]

#Feedback from Joshua:

I experimented with the code on GitHub. I’d suggest making more clear that the code work in us-east-1. There is a comment about launching the template in that region, but it wasn’t obvious to me it was a requirements until I launched it somewhere else and did some troubleshooting.

We should deploy the necessary template bucket to every region where all necessary services are available so a user could deploy this to regions outside of US East (N. Virginia).

[jpignata]

Will be resolved in #10. Thanks!