Remove deprecated command and fixtures from demo bundle
Fix export products scenario
Update behat scenario
Move demo data to installer bundle
Update installer demo data parameter
Remove demo bundle
Update minimal install instruction in readme
Flexible getValue now return null and not false
Update bc break
Merge pull request #573 from akeneo/fix/flexible_get_value

Flexible getValue now return null and not false
Merge branch 'master' into PIM-1674
PIM-1674 Declare changelog
PIM-1674 Light refactor to get different Completeness generator