Added Overview of Request and Response Headers, expanded spec and examples section

[acquiachrisnagy]

• Spec section follows top-down approach of defining components
• Example section follows bottom-up approach of building up the header values

[kevinhankens]

Thank you for this! I wish I had this a week ago :D

I'm going to take a closer look and I'll add comments inline if I see anything.

[acquiachrisnagy]

I've updated to table of contents and some functions to the pseudo code to illustrate how the attributes are encoded. Let me know if you have any other suggestions

[acquiachrisnagy]

Thanks for the suggestions

[kevinhankens]

Sweet. +1 from me. @nickveenhof @cpliakas ok to merge?

[cpliakas]

Doc improvements are best made by people who wrestle with implementations for the first time, so I say go for it!

[kevinhankens]

Done. Thanks!!