HttpResponse class

1. Constructors
2. HttpResponse
3. Properties
4. bufferOutput
5. connectionInfo
6. contentLength
7. cookies
8. deadline
9. headers
10. persistentConnection
11. reasonPhrase
12. statusCode
13. done
14. encoding
15. hashCode
16. runtimeType
17. Methods
18. detachSocket
19. redirect
20. add
21. addError
22. addStream
23. close
24. flush
25. noSuchMethod
26. toString
27. write
28. writeAll
29. writeCharCode
30. writeln
31. Operators
32. operator ==