Added a stop() command to both servos in servo-test.js & simplebot.js.…

[Shane-Lester]

…to prevent movement on initialization (otherwise they slowly rotate when instantiated).

[rwaldron]

Thanks @Shane-Lester!

[dtex]

This shouldn't be necessary so we might have a bug in J5. I'll check it out.

[rwaldron]

@dtex maybe I was just cargo culting with my own code, but I've always called stop() with continuous servos:

• https://github.com/rwaldron/johnny-five/blob/master/eg/servo-continuous.js#L12
• https://github.com/rwaldron/johnny-five/blob/master/eg/servo-drive.js#L29
• https://github.com/rwaldron/johnny-five/blob/master/eg/magnetometer-log.js#L47-L48
• https://github.com/rwaldron/johnny-five/blob/master/eg/magnetometer-north.js#L43-L44
• https://github.com/rwaldron/johnny-five/blob/master/eg/line-follower.js#L130-L136

¯_(ツ)_/¯