Resolve "file conflicts with same file imported from GOPATH" issue

A very useful tip from Glenn:
"One simple way to avoid the issue is to keep all your yaml files
and their associated source files outside of your GOPATH
and then import any other packages you need that are in your GOPATH
from those files."

https://groups.google.com/d/msg/google-appengine-go/dNhqV6PBqVc/HN4eR2fjhpwJ