Update Sandbox erosion examples
Removed hard-coded erosion from primitives
Merged ellipsoidPrimitive to ellipsoidPrimitiveMaterials
Merge branch 'ellipsoidPrimitive' into ellipsoidPrimitiveMaterials
Merge branch 'ellipsoidPrimitive' into ellipsoidPrimitiveMaterials
Re-add terrain support.
Merge branch 'imagery_layers' into terrain
Merge branch 'imagery_layers' into terrain
Merged ellipsoidPrimitive into ellipsoidPrimitiveMaterials
Added material to Sandcastle volume example
Merge branch 'imagery_layers' into terrain
Merged ellipsoidPrimitive to ellipspodPrimitiveMaterials
Fix Mercator projection in Columbus View and morphing.
Merge branch 'imagery_layers' into terrain
Merge branch 'master' into ellipsoidPrimitiveMaterials
Merge branch 'imagery_layers' into terrain
Merge branch 'imagery_layers' into terrain
Merge branch 'imagery_layers' into terrain
Merge branch 'imagery_layers' into terrain
Merge branch 'ShaderProgram' into ellipsoidPrimitiveMaterials