Changed inheritance on exceptions from Exception to RuntimeException.

Removed choice of URLConnection (use only HTTPClient, as it works with Android
as well).
Wrapped checked exceptions in RuntimeExceptions.
Added comments to getNationInfo and getRegionInfo.
Updated version.

git-svn-id: http://ns-api.googlecode.com/svn/NSAPI@21 9155b743-18ae-82dd-b43b-f09fd84fe399
Added possibility to add arguments to a shard, like offset for RMB messages.

 git-svn-id: http://ns-api.googlecode.com/svn/NSAPI@22 9155b743-18ae-82dd-b43b-f09fd84fe399