main.go: Added logging of mounts.
Added `rsrv.conf' as example of using include in config file.
Started work on including files within the config file.
config.go: Fixed discarding of last mount.
config.go: Replaced calls to `Trim*' with use of slices.
config.go: Refactored repetitive code.
moved example configuration files to `example/'.
Updated example configuration.
rsrv.conf: Added comment.