Go buildpack uses package spec from Godeps.json

Change effective on 03 December 2015

Previously we defaulted to ./... except when using $GO15VENDOREXPERIMENT=1 where we read the package spec from Godeps/Godeps.json. Now we always read the package spec from Godeps/Godeps.json and default to . (the godep default) if none was specified. This should be transparent to all users. Please open a support ticket otherwise.

For more information on using godep please see our Go Dependencies via Godep article.