Added new nodelet to capture training data of stereo camera to jsk_pcl_ros and update launch files to capture training data of multisense

1) a nodelet to synchronize several messages about capturing environment (mask, pose of camera ...)
2) add launch file to capture data of multisense

![multisnse_capture](https://cloud.githubusercontent.com/assets/40454/5515081/40c06c2c-889d-11e4-92ec-282864c90b12.png)