Fixed example filename.
Typo fixes, expanded spotlight documentation
Revert "Typo fixes, expanded spotlight documentation"

This reverts commit 5be78ec3a60ae311bea1ec3fbf4841520a88d148.
Typo fix, and spotlight documentation
Update docs/manual/introduction/Creating-a-scene.html

fixed typo "height of the are we want" -> "height of the area we want"
Update examples/css3d_periodictable.html

Removed duplicate initialization of object variables. 
The original table-item-object isn't actually used in the
loops.
Fixed bug where last group in OBJ was not added.