Instance names

[richardschneider]

From RFC 6763 section 4.1.1

The portion of the Service Instance Name is a user-
friendly name consisting of arbitrary Net-Unicode text [RFC5198]. It
MUST NOT contain ASCII control characters (byte values 0x00-0x1F and
0x7F) [RFC20] but otherwise is allowed to contain any characters,
without restriction, including spaces, uppercase, lowercase,
punctuation -- including dots -- accented characters, non-Roman text,
and anything else that may be represented using Net-Unicode.

See also #64

[richardschneider]

If you want to include a dot in the instance name, you must escape it with a backslash; e.g. @"instance\.name"