Fixed to be set parameters including SPACE for prunsrv.exe

Fixes Red5/red5-server#5

This changes are workaround for setting parameters including SPACE (e.g. C:\Program Files\Red5). I'm not good at making Windows bat file and don't know how to quote parameters in this case. Somehow, this workaround works for me.

How to verify:
* install Red5 service

  ```sh
> install-service.bat
```

* startup monitoring application

  ```sh
> prunmgr.exe //MS//Red5
```
* confirm the parameters for Red5 service

  Right click monitoring application in system tray, then select Configure. You can see the parameters set by install-service.bat.

  ![prunmgr-configure1](https://cloud.githubusercontent.com/assets/96569/4469282/082816da-490f-11e4-8847-f82d2d1b832e.png)