Enter one-line summary

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Have a multi monitor setup
2.
3.

What is the expected output? What do you see instead?
I would like to be able to restrain boblight's working area, for example it 
would be good to have an x,y,w,h argument, to be able to declare which part of 
the screen should be handled by boblight.

Now i'm using boblight-x11 on my notebook with an external monitor.
So i would like to be able to tell boblight to only handle my secondary 
monitor, not all of them together. Now the large screen's ambilight's left side 
reacts to my notebook's screen, which is kind of weird.
Now i need to do xrandr --output LVDS1 --off if i watch a movie and wan't to 
have correct lights, as by degault boblight-x11 reads the whole X11 image that 
contains both of my monitors.

What version of the product are you using? On what operating system?
boblight-x11 on ubuntu14.04

Please provide any additional information below.
boblight-x11 is the client only, the "server" 
is a raspberry-pi running hyperion.

Anyways thank you very much for this software and keep up the good work!

Original issue reported on code.google.com by metamorf...@gmail.com on 21 Jan 2015 at 8:08

[GoogleCodeExporter]

Sorry, i forgot to set a correct summary, and no i can't see where i can change 
that.

Original comment by metamorf...@gmail.com on 21 Jan 2015 at 8:09