Fixed return value documentation of DocumentHandler::getByExample() and CollectionHandler::byExample() method
Not regenerated Docs yet.

Signed-off-by: Frank Mayer <frank@frankmayer.net>
Implemented CollectionHandler::firstExample() method

Generated Docs

Update CHANGELOG

Signed-off-by: Frank Mayer <frank@frankmayer.net>
Merge branch '1.2' of E:/PHPStorm/Github-Repos/ArangoDB-PHP into 1.2