now, we auto add the start.sh -> /usr/bin/gogs_start, then supervisor
needn’t the full path, detail please see the commit.
and how to use:
entry gogs root path, then input
scripts/gogs_supervisord.sh restart (add sudo if need)

Removed trailing whitespaces with

```sh
for file in `grep -r " $" * | cut -d : -f 1 | sort | uniq | grep -v " "`; do sed -i 's/[ \t]*$//' $file; done
```

and some handwork.

move etc/supervisord.conf to conf/etc/supervisord;
remove tmp folder, then all logs move to log folder;
move the supervisor.pid to /tmp folder.

just like ./gogs_supervisord.sh start
./gogs_supervisord.sh stop
./gogs_supervisord.sh restart
and logs all saved tmp folder