I'm might be very wrong here, but I couldn't find a way to display the plot I got in the homepage of the page (like the trend in this image : http://jenkins-le-guide-complet.github.io/html/figs/web/jtdg_0230.png )
I know we can display it in html in the description (like here : http://stackoverflow.com/questions/31256704/display-jenkins-plots-on-project-homepage ) but it's not the best looking way.
I looked a bit at the source code of different plugin but i'm still not sure what triggers the display in the homepage.

(Btw I use the CSV parsing of a very simple file)
If it's already implemented and I just didn't find how to do it, then I'm very sorry for creating an issue for that !