bootstrap the xAPI client Symfony2 bundle
add a readme
move class to Bundle subnamespace
Add 'Bundle/ClientBundle/' from commit '91c6d071befc5b805d07f770f38f0573ea5fe71e'

git-subtree-dir: Bundle/ClientBundle
git-subtree-mainline: c4e736ae6e4f6ceb2042ea87d34d648e43b798ef
git-subtree-split: 91c6d071befc5b805d07f770f38f0573ea5fe71e
include the client bundle in the distribution package