Created by: ghost
I've created two new possible classes check-hide and check-strike that can be used in lists with check-boxes such as To-do lists or statistics questions.
The check-hide class hides the checkbox and it's parent. The check-strike class on the other hand changes the line-decoration of the label(sibling) to line-through.
I've put the code under js/src/checkbox.js. Someone needs to use Grunt to regenerate the dist folder, a thing that I haven't done. I did test the code in bootstrap.js and compiled it in bootstrap.min.js and it worked perfectly(I didn't left it there after I read the guidelines so I put the code in js/src/checkbox.)