title: opening a plotly plot in a browser instead of a viewer in rstudio
body: <p>I'm looking for a way to render my plot_ly plot directly to a browser in stead of r-studios default viewer. I've searched the plotly documentation but I only see a reference to the default behavior of opening the plot to a browser when running r from a terminal.</p>
  
  <p>Does anyone know how to open to a browser window by default? Maybe a parameter to the plotly layout() option? </p>