This directory contains Gin, a set of utilities to make working with V8 easier.
Here are some of the key bits:
converter.h: Templatized JS ↔ C++ conversion routines for many common C++ types. You can define your own by specializing Converter.
object_template_builder.h: A handy utility for creation of v8::ObjectTemplate.
runner.h: Create script contexts and run code in them.
module_runner_delegate.h: A delegate for runner that implements a subset of the AMD module specification. Also see modules/ with some example modules.