Organize http examples better

[riyafa]

Although we have very useful examples and they cover most of the required areas, I think that they would be more usable for a new user if they are better organized.
One suggestion for organizing is from the basics to the advanced. We can have examples like the basic client and service examples and handling query and path params and such under the basic section. Then we can have a topic called databinding, a topic on cookies and sessions and a section on streaming and another on advanced topics like multiparts. I might not be the expert to suggest topics. But I think that if I am a new user, I would like to be able follow topics in order to get a comprehensive understanding of all the supported concepts in http only by going through the examples. Unless there's a proper order of topics this would be difficult for a new comer.