removed xcodeproj
Revert "removed xcodeproj"

This reverts commit 7ee1ea689dafea6d9b9afe8d6ac86c335d74b844.
Revert "first basic glut program using tutorial: http://www.3dcodingtutorial.com/Your-first-OpenGL-program/The-first-OpenGL-program-with-GLUT.html"

This reverts commit 098411d86fccb9ed44b9a5e8c4332d14c5bf8c7d.
commit
added tut