Fix geometries without indices
If `node` is in the path, use that instead of the old bundled executables.

Fixes #1600.
Add ability to set target frame rate.
Merge pull request #1679 from AnalyticalGraphicsInc/preferSystemNode

If `node` is in the path, use that instead of the bundled executables
Fix typo.
Fix typo.
Fix typo.
Merge pull request #1676 from AnalyticalGraphicsInc/targetFrameRate

Add ability to set target frame rate.
Add specs for PrimitivePipline geometry packing.
Merge pull request #1675 from AnalyticalGraphicsInc/indices

Fix geometries without indices
Merge branch 'master' into pick-terrain