Fixed major sed bug
Fixed major sed bug

This commit fixes #7 by checking the regex on the sed command used on
[line
146](https://github.com/moritzdietz/pi-syncscript/blob/4db3b2c611dd5322ca50931f402e9e3697a40c1a/btsync.sh#L146)
and [line
163](https://github.com/moritzdietz/pi-syncscript/blob/4db3b2c611dd5322ca50931f402e9e3697a40c1a/btsync.sh#L163).

moritzdietz/pi-syncscript