TelnetClient.php: Add getters/setters and use them
TelnetClient.php: Remove @return from ctor

It returns self, not void. Also phpdoc says it may be omitted
TelnetClient.php: phpdoc fix
TelnetClient.php: Add getRegexPrompt()
TelnetClient.php: Fix phpdoc and add PCRE check in setRegexPrompt()
testTelnet.php: Use getopt() even though it sucks
TelnetClient.php: Make ctor incompatible with previous versions

-The $timeout argument was used for two completely different things such
that the interface has been broken anyway
Update README.md for new interface
testTelnet.php: Fixup
README.md: Update to reflect changes to testTelnet.php
TelnetClient.php: Use @see phpdoc tags
TelnetClient.php: Add @author and @version
Update README.md to note differences with upstream