Dealing with utf16 string

[markxp]

I used tail.TailFile and t.Lines happily. Until one day I had a UTF16-LE encoded file.
Since golang string type supports utf-8, it is not capable to throw a UTF-16 string correctly.

It will be nice if a tail.Line can return a []byte. What do you think?

[nxadm]

This would be API breaking, so it can be considered for a v2 release.

[nxadm]

I moved the discussion for v2 here: #36