Restyle Page

*Re styled and resized instructions div as well as note divs
*Makes the page look better/cleaner and more responsive
Changed note boxes html and adjusted js

* Changed color of note boxes
* Added on hover action to note boxes
* Used animation to create gradient for hover
* Fixed findFreq function to grab freq from data attribute
Replaced animation with hover action

*Removed keyframes animations
*Added crossbrowser compatibility to hover actions
*Used linear gradient for note box hover action
Merge branch 'master' into gh-pages