Because I’ve never been really happy with the current strategies (I know) to deliver images the right solutions in responsive layouts, I lately started to work on my own approach. Other solutions like for example Wilcox’ Adaptive Images just rely on the screen resolution/window size or require additional (and manually added) data attributes or even js/noscript hacks in the markup.
For me it was important to have a solution, that is installed once and then just works. So I took some ideas from other stratgies and put something together that seems to work so far (but I still have to test it in older browsers). Feel free to give it a try. I’d love to get some feedback on this. For detailed info have a look at the README.