Merge pull request #1122 from Arkni/docs

[Compatibility examples] the callback method of Callback validator accept 3 params
Add @jonasesteves to the list of contributors
Add @s-a-y to the list of contributors
Add @ArnauAregall to the list of contributors
Cleanup
Add Catalan language package
Indicate that BV requires jQuery 1.9.1+ and Bootstrap 3.0.0+
Add @joshuachestang to the list of contributor