initial implementation for adding event to render a block
update BlockEvent to allows multiple block
Add tests
Add more code, and screenshots of the profiler
Update documentation
Add core bundle in composer
Update travis to include more symfony version
Fix namespace
Add Configuration Test
Add BlockEvent Test
Add TextBlockListener Test
Add ServiceListType Test
Refactor GlobalVariables ... and add test
fix 2.2 support
Updated documentation (cf. issue #99)
Merge pull request #106 from Bladrak/update_doc_install_knp_dep

Updated documentation (cf. issue #99)
Merge branch 'sonata/master'

Conflicts:
	composer.json