Array of record objects as data

[Laszlo Simon]

Although it's easy enough to transform the data, it'd be nice if Vizzu accepts data as an array of objects e.g.

[
{ Genre: 'Pop', Type: 'Hard', Popularity: 114 },
{ Genre: 'Rock', Type: 'Hard', Popularity: 96 },
...
]

[David Vegh]

implemented in #218