Merge pull request #1410 from vrabaud/master

opencv2 2.4.6-1
robot_pose_publisher: 0.2.2-0 in 'hydro/release.yaml' [bloom]
Merge pull request #1411 from rctoris/bloom-patch-1

robot_pose_publisher: 0.2.2-0 in 'hydro/release.yaml' [bloom]
opencv2_doc 2.4.6