ros-perception/calibration — pull request #27 by k-okada (2014-09-12 11:19:38+00:00)
Title: axis is already list

joint_map[].axis returns list so we do not need to split and list.
```
>>> robot.joint_map['HEAD_JOINT0'].axis
[0.0, 0.0, 1.0]
```

c.f.
need https://github.com/ros/urdfdom/pull/46 to work this package.