(#8) API change: s/*net.TCPListener/net.Listener/

This API change is necessary to support UNIX domain sockets seamlessly.
(#8) Support both TCP and UNIX domain sockets.
Add a missing import in the example
Fix #9.
Revert "Fix #9."

This reverts commit 846a5379b9ce685d0561ec9ac80f7ffcf5ca2628.
Merge branch 'fix-example' of git://github.com/brunoqc/goagain
go fmt
Do the AcceptTCP() in the example
Shorten error handling in example.
Clean up @brunoqc's example.  Closes #10.
Merge branch 'unix-domain'

Conflicts:
	cmd/goagain-example/goagain-example.go

Closes #8.
Merge pull request #1 from rcrowley/master

test