argonDashGallery() not working

[erp31]

Hi,

Thanks for your work on this package, it looks like it could be used to make some really nice Shiny apps! I just wanted to point out that the demo function doesn't work.

When I run argonDashGallery() as suggested in the README I get the following error message:

Error in system.file(paste0("examples/app.R"), package = "argonDash",  : 
  no file found

I think "examples/app.R" needs to be replaced with "examples/gallery/app.R".