Update README.md
fixed linking Realtime Extensions library on some linux systems (undefined reference to clock_gettime)
Upgraded to latest Three.js.

Default scene lighting seems weird but otherwise looks correct. I will
file a bug.
Fixed apparent bug in Minebot; was a viewer bug
Cleanup and Debugging
Attempts to make camera handling more robust; needs testing.
Still working on fov/aspect ratio issues
Took out test code
Cleaned up unused params; fixed camera FOV
Changes to mirror Three.js Repo Version