net: add examples

[adg]

The net package is somewhat overwhelming. Good examples would help.

[rsc]

Comment 1:

Labels changed: added go1.2.

[rsc]

Comment 2:

Labels changed: added documentation.

[rsc]

Comment 3:

Labels changed: added go1.2maybe, removed go1.2.

[rsc]

Comment 4:

Labels changed: added go1.3, removed go1.2maybe.

[gopherbot]

Comment 5 by imjasonh:

What kinds of samples are you looking for? I'd be happy to contribute some simple ones
if there are requests for anything in particular.

[rsc]

Comment 6:

Labels changed: added release-go1.3.

[rsc]

Comment 7:

Labels changed: removed go1.3.

[rsc]

Comment 8:

Labels changed: added repo-main.

[rsc]

Comment 9:

Labels changed: removed release-go1.3.

[rsc]

Comment 10:

Labels changed: added release-none.