Revert "More unicorn changes"

This reverts commit e77fdf7a1b45c0dff1455e46fefa5cec5c39c492.
Revert "Additional changes to make unicorn work."

This reverts commit 22026688ff0a28e1e5b159ba72de5dc3e8a7dd97.
Revert "Added unicorn gem."

This reverts commit 6a5ec7842310ded3b04da022690c0d1821121218.