haoqu.ma / gotty

Fix typo in README

The processes were left behind when clients closed their windows.

Some terminal massages were shown at strange positions.

When a rune stands over the buffer boundary, invalid UTF-8 bytes were
sent to the client. Now the logic checks if the tail of the buffer can
be decoded as a valid rune. When it's an invalid byte sequence, the logic
keeps it in the buffer and send it in the next loop with the following byte sequence.