Add RiuDB lib
	new file:   library/RiuDB/Json.php
	new file:   library/RiuDB/Json/Alias.php
	new file:   library/RiuDB/Json/Alter.php
	new file:   library/RiuDB/Json/Create.php
	new file:   library/RiuDB/Json/Delete.php
	new file:   library/RiuDB/Json/Json.php
	new file:   library/RiuDB/Json/Read.php
	new file:   library/RiuDB/Json/Update.php