The functionality will be added (that is, if I don't get bored) one thing at a time with the spec.
If you want to test, point the libv8 gem (in Gemfile) to its trunk branch & my changes at stormbreakerbg/libv8 @ trunk.
What works currently is getting V8 to initialize, say its version and create a new Isolate.
This fixes segmentation fault in the tests as extending the examples in a before block with override of `#instance_eval` seems to not work.
Also, the context wrap is now opt-in with a helper method, instead of opt-out and relying on `#described_class` (which has slightly different behavior in RSpec 3).
Tested on Ruby 2.1.5 and RSpec 2.99.2.
This changes the accessor code to push as much
object allocation onto Ruby as possible. Instead
the C++ layer acts strictly as glue using stack
allocated variables to convert v8 value to ruby
objects at the moment it passes them off to Ruby.
