Added a simple 'rights' system.

You can now provide a second argument to bot.command().

Goes like this:
bot.command('quit', 1)
If the second argument == 1 then the bot checks if the command was
issued by the owner, else everyone can use the command.
Fixed a few small things.

+ Fixed parameter grabbing.
+ Fixed argument capitalization.
+ Added version number. Can be called via bot.version.