This extension will implement the tota11y JS file from Khan Academy
All credit to Khan Academy and their awesome script. This extension just loads the script on all pages. See http://khan.github.io/tota11y/ for more details.
v0.1.5 - 6/29/2016 - Updated script to 0.1.5
v0.1.3 - 2/2/2016 - Updated dashboard icon so it now toggles on/off, updated tota11y script to be 0.1.3, refactored scripting.
