Revert "Add notes."

This reverts commit f283756ea29531a24e05c6555523562702c96f2e.
Revert "Add graceful shutdown."

This reverts commit b3ee760757bd6528f4961ec9517a215d48c12c93.
Revert "Improved testing docs."

This reverts commit 7f9d66b2bc4d6132a80f96637145783bd2bf4761.