Expliciting end of chart options object

[MuriloChianfa]

hello guys, im using your package along aside with laravel-page-speed, this package remove all whitespaces to reduce the size of html payload, it requires each javascript end of objects is in explicity mode.

i believe that modification not affects the normal function of the package.

im at your disposal.

[ArielMejiaDev]

In this case, it is too specific you are welcome to add a PR to support this as an additional option.