Revert "gitignore .settings"

This reverts commit adf76e944fac07ba2ef5207a8cd2465b5a8020e3.
Revert "Add Intro and IntroUI classes"

This reverts commit 8736da24c146176282fde857896a2a0c17f5780a.
Revert "Add POS project"

This reverts commit 3e1fce94c88394d5356ea81f02700d9dd9cd2d5b.