changed to use plugin logger instead of mclogger. Also use default logging methods (.info(...) instead of .log(Level.*,...))
Added muliple logon messages to choose from, does not yet convert old format to new.
Added converting from old single message yml format to new multi-message format.

Also forgot to change the logging messages removing the redundant "Lonely Server", getLogger() does that for us.
Merge pull request #2 from admalledd/master

Merge multi-message support from admalledd/master