Add text of current measurement

[nylen]

I'd like an option to add the text of the current measurement (overlaid on top of each graph), please.

I may hack on this myself, depending on interest I can try to submit a PR.

[nylen]

Done in https://github.com/nylen/multiload-ng/commit/da6e630319dd5c2037483d51f44a4ab1ea9fc3f8 (and other commits):

[ValentinDrean]

Thanks a lot ! Just build it and works like a charm <3