gen-release-package: Steps to generate a release tarball

[anselmolsm]

This is an initial version of a script to generate release tarballs.

Information on how to create release packages is not well documented, this script intends to share these steps and allow contributors to improve both the generation process as well as npm-related optimizations.

Signed-off-by: Anselmo L. S. Melo anselmo.melo@intel.com

[anselmolsm]

This solves packaging issues like #141 .

[brunobottazzini]

Didn't test it but looks good

[anselmolsm]

Merging this version, far from ideal, but enough for our current needs. Thanks, @brunobottazzini :)