move tweet.l under nodes directory, listen /pepper_tweet
fix package.xml
add sample/sample.l
add nao_dashboard
add simple demo code
use naoqi_sensors
use key for recognize-word
use all cameras (top/bottom/depeth)
Merge branch 'master' of http://github.com/jsk-ros-pkg/jsk_robot into use_all_camera
Merge pull request #124 from k-okada/use_all_camera

use all cameras (top/bottom/depeth)