Initial commit
+ added latest version of exAuth
* the event-handler now uses asynchronous chat events
* made the plugin threadsafe
* moved playerJoined- and playerQuit-handling from the event-handler to the plugin class
+ added error-handling when an error occurs in the hashing-methods
* renamed "MyEventListener" to "EventListener"
* renamed "Encryption"-class to "Hash"
* introduced a more java-like coding style
* the "encryption" entry in the config file is now called "algorithm"
* improved readme
* some cleanups
* the plugin now uses a Player object instead of a string to identify
the saved inventories and the players that are logged in