Merge pull request #69 from MartinBieth/master

Implement json-schema and remove builders
Update DataStructure.md
sample1 fix
Merge pull request #71 from glivron/master

sample1 fix
Merge pull request #72 from MartinBieth/master

HUB-148 : remove error in require validator
new factory with packages support
update callback's serializers with err and result
Merge pull request #73 from glivron/master

New factory with packages support
Merge remote-tracking branch 'upstream/master'
Merge pull request #74 from glivron/master

Update callback's serializers with err and result
HUB-471 : resolve the bug
HUB-473 : resolve bug
HUB-472 : resolve bug