Use the sun location in the environment to set the light position.
Merge pull request #313 from ey6es/master

Voxel painitng with color selection, fix for coloring subvoxels (must break up larger ones).
Merge branch 'master' of https://github.com/worklist/hifi
When we add voxels, add them with the selected color.
add a V2 transmitter data packet for new iOS transmitter
Merge pull request #314 from birarda/transmitter

add new packet header for V2 transmitter data
Merge branch 'master' of https://github.com/worklist/hifi
Turned the voxel edit commands into menu options for better visibility.
When in add mode and there's no voxel under the cursor, place the mouse voxel
a fixed distance away.
Support dragging when in coloring mode.  I tried it in add/delete mode, too,
but it felt messy.