Vendoring and project layout

Vendoring Go applications is still a largely unresolved issue. There are discussions and plans to produce an official vendoring solution (https://github.com/golang/dep), but it's very early days and things are far from complete. For now, there are a number of alternative solutions. By default, you can place packages into a local vendor directory to use them instead of those in your GOPATH environment variable. This allows packages to pin on the version in their vendor directory and allows for reproducible builds without having to commit your entire GOPATH into version control. Most package managers take advantage of this. For this recipe, we'll explore the layout for a web application and how to manage its vendor dependencies with godep github.com/tools/godep, a popular tool for managing dependencies.

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