Set the correct configuration property for the server Ip.

The configuration manager looks up for the "server_ip" property, instead the "ip" one declared on the config.lua.dist file. Fixes #2
Merge pull request #13 from adakraz/cmd_options

Fix command line handling and exit status
Moved Vocation implementation to source unit
Moved Trashholder implementation to the source unit
Moved Town implementation to source unit
Moved Position implementation to source unit
Moved Teleport implementation to source unit
Moved Spawn implementation to source unit
Moved Cylinder implementation to source unit
Moved Thing implementation to source unit
Moved Beds implementation to source unit
Moved Chat implementation to source unit
Made the class Combat a namespace
Moved NetworkMessage implementation to source unit
Moved Connection implementation to source unit
Moved Container implementation to source unit
Moved IOPlayer implementation to source unit
Moved OutputMessage implementation to source unit
Moved Party implementation to source unit
Moved ProtocolOld implementation to source unit