Renamed cp command to overlay to match the documentation.

usr/local/share/bastille/template.sh

@@ -132,7 +132,8 @@ for _jail in ${JAILS}; do
                     # Allow redirection within the jail. -- cwells
                     _args="sh -c '${_args}'"
                     ;;
-                cp)
+                overlay)
+                    _cmd='cp'
                     # Convert relative "from" path into absolute path inside the template directory. -- cwells
                     if [ "${_args%${_args#?}}" != '/' ]; then
                         _args="${bastille_template}/${_args}"