My Header fix about CR-LF endings

Issue: <a href="https://github.com/andreasgal/vtt.js/issues/125">https://github.com/andreasgal/vtt.js/issues/125</a>

I was able to fix the header issue I was talking about, but not even sure if it's part of the spec. Anyway, I ran npm test and all the tests seem to pass.

Here's all the changes I made. I've added things to help me debug, which I've added, removed, then added again... and I still need to get better with git because, well, as you can see, a lot of changes I want to keep local but don't know how.