Added initial documentation. Defined constants in WorldWind. Added argument validation and response.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2455 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Converted Location to a class.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2456 822214bb-dcf7-4c8d-a767-17ae0fb20d88
More work on Location. Removed erroneous doc parameter from WorldWind.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2457 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Documented Angle and WWMath.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2458 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Documented ArgumentError and Logger.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2459 822214bb-dcf7-4c8d-a767-17ae0fb20d88