Merge pull request #17 from rctoris/master

ros3djs r4 doc added
Merge pull request #18 from rctoris/master

ros2djs and nav2djs r1 doc added
Reorders demos to show flashy 3D first.
Merge pull request #19 from baalexander/reorder_demos

Reorders demos to show flashy 3D first.
RMS 0.3.0 docs added