change breakPointVal var to this.reverseBreakpoints[j]

completed changing code to oop.
we have a working version!
but only if we put the picturesserve init() call to the bottom of the index.html because gtElementsByClassname doesn't find nodes until the page has loaded.
Signed-off-by: Andreas Geibert <ageibert@cemico.de>
Merge branch 'master' of github.com:geibi/pictureserve

Conflicts:
	pictureserve.js

Signed-off-by: Andreas Geibert <ageibert@cemico.de>