put in an initial opts log=false to not show client server messages

allows you say:
```javascript
  app.use( osc(io, { log: false } ));
```
so that:
``` bin/sh
  osc.io server 127.0.0.1:7655 ...... []
```
will not show up

and
```javascript
  app.use( osc(io, { log: true } )); == app.use( osc(io));
```

### this always shows up
```bin/sh
osc.io client created 127.0.0.1:8000
osc.io server created 127.0.0.1:7655
```