Update object's file property after moving uploaded file
only update file if we get a File instance
update uploaded file with stored on save.
Documentation fix

The docs appear to be missing _fs to indicate the product_image filesystem rather
than the product_image alias
use write mode instead of append when uploading

When performing an upload one expects the new file to replace
the old file instead of appending to it.
Merge pull request #108 from gavD/master

Documentation fix
Fix name when guessed extension is empty
Fix typo
Merge pull request #121 from erivello/patch-1

Fix typo
Enable symfony  >= 2.3
Improve composer.json dev requirements

Remove doctrine/mongodb as it is not a direct dependency for this
library
Add phpunit for testing purposes
Merge pull request #132 from tommygnr/symfony2.3

Enable symfony  >= 2.3
Merge pull request #133 from tommygnr/composer-dev-improvements

Improve composer.json dev requirements
If the gaufrette adapter supports metadata then set it on the adapter
Add test for when using adapter that supports metadata and a test for when adapter does not support metadata
Add basic file fixture
Merge pull request #122 from jenkoian/gaufrette-metadata-support

Gaufrette metadata support
Merge branch 'update_file_after_upload' of git://github.com/khepin/VichUploaderBundle into khepin-update_file_after_upload
Add test for a47f27a
Merge branch 'update-uploaded-file-on-save' of git://github.com/formapro/VichUploaderBundle into formapro-update-uploaded-file-on-save