Adds world/view matrix in shaders
jsBeautify CullStack and CullVisitor
Fixes bad style in tests
Fixes examples to use getModelViewMatrix instead of getModelviewMatrix
Merge pull request #153 from cedricpinson/feature/world-view-matrix

Feature/world view matrix
Keeps the initial projection matrix in the culling visitor
Merge pull request #154 from cedricpinson/keep-projection-on-cullvisitor

Keeps the initial projection matrix in the culling visitor