Fixed a build issue (added Dependency Ref CoreLocation)

Added CoreLocation reference to Frameworks attributes in AssemblyInfo on RedLaser Sample Code to fix a build problem 
Please refer to the issue below on StackOverflow for the details of the issue

http://stackoverflow.com/questions/14332416/monotouch-app-cannot-build-deploy-to-iphone-device-but-it-works-fine-on-isimulat