Thanks for the review!
You can customise the bookmarklet (adding custom resolutions etc) here: http://lab.maltewassermann.com/viewport-resizer/ and then filter responsible as described here: http://wordpress.org/plugins/responsible/faq/
thanks for the info. still not sure how to add that into the actual plugin and not as a bookmark. i think you should add the nexus line to the plugin. i tried to manually add the nexus 5(1920 × 1080 pixel resolution) using the customize button in the admin bar, but the preview didnt look like what it looks like on my phone.
