Adding study of Metric structure
openGEXing the Metric function succesfully! The function is able to obtain the metric values and store them properly into the multipliers!
Fixing some documentation for the Metric structure, and creating the definition of the new function to get the info of a GeometryNode. Doxygen documentation correct up to here.
Adding the analisys of the substructures of GeometricNode. Some are missing, but all of them are empty. Check the openGEX_identifiers.h to know which one is done
Adding headers also for BoneNode and Node structures (are empty!)
Merge branch 'master' of https://github.com/Juanmihd/example_openGEX