Change PLOD Ubershader to work with new guacamole design
Add Flags to PLODLoader
use pbr reset function for lazy model loading
fixed lazy models feature for multiple contexts
add first root bounding box picking test to PLODNode
Print PBR library pathes on running cmake
Add intersection method for schism bounding box in Ray class
Implement ray test for PLOD. Code cleaning
Clean code
PLOD shader code cleanup
Fix numerical instability on projecting points
Merge pull request #70 from feoo/develop

PLOD fix and PLOD picking