Set map rotation to 0 when resetting full extent, zoom to full extent.
Shorten app name for better readability.
Formatting.
Initial code commit for hello css media queries sample.

Add sample code for demonstrating how to use CSS media queries for OS and DPI detection.
This information can then be used to set font sizes, padding around elements, etc.
Merge branch '#9/add-css-media-queries-sample' into develop
Updated short and long description.