Merge pull request #104 from ahocevar/fix-add-remove-for-shared-billboards
Fixed type of Cesium context projection
Merge pull request #105 from schmidtk/master

Fixed type of Cesium context projection
Prevent context menu popping up on right click.

Like in the Cesium Widget.
Allows for smooth zooming.
Add Cesium.Cartesian3.lerp to externs.
Add Ellipsoid scaleToGeodeticSurface to externs.
Add Math.toDegree to Cesium externs.
Add terrain to main example.
Add IntersectionTests.rayEllipsoid and Ray.getPoint Cesium externs.
Add Billboard origin to Cesium externs.
Add Math.convertLongitudeRange to Cesium externs.
Add Cartesian3.clone to Cesium externs.
Have Globe.pick return non-null result in Cesium externs
Fix Ray type in Cesium externs.
More convenient camera orientation in Cesium externs.

Allows to simplify calling code.