libqt5opengl5-dev is required on ubuntu now
Merge pull request #38 from quarnster/patch-1

libqt5opengl5-dev is required on ubuntu now
Replaced OnFooChanged by setter support.
Drop requirement on GL extensions for now.

Will be back later in a more portable form.
Merge branch 'no-glext'
Implemented support for getters.
TypeSpec.New replaced by improved TypeSpec.Init.
Updated examples to use TypeSpec.Init.
Proper package-level documentation.
More package documentation tweaks.
TypeSpec.Name now defaults to the Go type name.
TypeSpec.Name usage in examples now unnecessary.
README tweaks.
Another trivial README tweak.
Add flags for Qt 5.2.1.

Fixes #39.
Skip private methods when computing data types.

Fixes #42.
Update delegate example to show data mutation.
Revert prior change. Leave it in history.
Added gopher example.
README: add Gopher video