add a vrui application class
change fiber class for draw the fiber. But it is not center for the moment.
center fiber.
-link vrui1.0-068 to the loadfiber project
-add pkgconfig folder for link cmake to the librairy.
-add a README file for the installation of the cave_fibers project
-adapt project to new librairy.
standardize file
fix issue
remove unused comment and replace /* */ for //
Merge pull request #4 from patx89/vruiintegration

Integration of the VRUI library and first succesfull test in the cave.