Use ungreedy regex in minecraft_users_

Hopefull this addresses #1

More information on ungreedy regex in PHP
http://docstore.mik.ua/orelly/webprog/pcook/ch13_05.htm
Merge pull request #2 from holic/master

Add raw request, response, handshake to return value

Thanks again!
Only return debug information if user wants it

As @holic pointed out, the unencoded debug information causes problems for
json_encode() as it assumes all strings are UTF-8 encoded. Instead of
trying to 'sanitize' the output for use in JSON, we only return debug
information if the user wants it. It is up to the user to use base64_encode()
to encode the data for json_encode().

Additionally, I moved the debug array keys into an array located in the 'debug'
array key.