aka Make the PlatformUIBundle public, tasks:

• Add a license header in source code files
• Make sure the README is up to date and clearly separate the requirements for running it from requirements from developing it
• Remove the useless version in YUI modules
• Write one (or several) blog post with:
  • a screencast
  • the technical key concepts
  • a mention of the biggest missing features (i18n, policy, ...)
  • call to contribution
• tag + packagist
• [nice to have] configure TravisCI to replace Jenkins
• [nice to have] generation of the API doc