Fix php doc for ProductBuilder::__construct
Fix some php documentation in many classes
Fix php doc in CustomEntityBundle
Add some php doc on DemoBundle
Fix php doc on flexible entity bundle and grid bundle
Add/Fix php doc on ImportExportBundle
Merge branch 'master' into PHPDoc
Merge pull request #544 from akeneo/PHPDoc

Php doc
Fix phpcs
Fix phpdoc
Update changelog
Add some different measure units in demo products
Update changelog
Add YamlReader in ImportExportBundle
Fix products demo data
Update the product transformer and related processor to deal with
heterogeneous data as with json file
Update product demo data set and configure the product processor used in
installer to handle heterogeneous product data
Fix phpdoc
Merge branch 'master' of github.com:akeneo/pim-community-dev
Remove Yaml reader