URBNG-131[WP]Implement API for fetching nearest game, user played game

Signed-off-by: psimek <przemyslaw.frackowiak@hotmail.com>
URBNG-131 [WP] Changes in IGameWebService.cs and IGame.cs

Signed-off-by: psimek <przemyslaw.frackowiak@hotmail.com>
Merge pull request #33 from psimek/windows_phone

URBNG-131[WP]Implement API for fetching nearest game, user played game