add clever sizing of the image based on the container dimensions (uses `background-size: cover`)
add line that loads SparkMD5 (is installed by Bower, but not loaded by default)
0.1.1
set minimum size to be 16px; measure the container on requestAnimationFrame to be sure it already has layout
0.1.2
Merge branch 'master' of github.com:warpech/gravatar-img