Fixed title in extend / promote MIT header.

Signed-off-by: Grant Skinner <info@gskinner.com>
Merge branch 'classRearchitecture' of github.com:CreateJS/EaselJS into classRearchitecture
Added txt extension to LICENSE.

Signed-off-by: Grant Skinner <info@gskinner.com>
Updated promote to work with minimized code.

constructors are renamed by uglify, which broke promote's dependency on constructor.name.

Signed-off-by: Grant Skinner <info@gskinner.com>
Update libs, docs, and VERSIONS.

Signed-off-by: Grant Skinner <info@gskinner.com>