Append tour html to DOM element different than body.

[simonemazzoni]

Hello, I noticed that there isn't a way to append the tour tooltip to a specific element instead of the body element.

According to this line of intro.js source code, is possible, but the angular-intro service doesn't allow this.

WORKAROUND I redefine the property intro._targetElement accessing it from ngIntroService before call ngIntroService.start() but it isn't a very clean solution.

There is a better way to do this?