New procedure for iCub stand up demo

[gabrielenava]

In november-december 2016 most of the software that is used for running balancing simulations (yarp, yarp-wholebodyinterface, icub-gazebo) has been updated. In particular, the original procedure for running the iCub stand up demo was the following:

• Switch to demo_codyco branch in yarp-wholebodyinterface repo;

• Switch to icub_chair branch in icub-gazebo repo;

• Switch to demo_codyco branch in WBIToolbox-controllers repo;

• Run gazebo_chair from a terminal. This command is an alias to automatically load the world with iCub and the chair in gazebo.

After the general update in november-december, this procedure has been changed. In particular:

• In yarp-wholebodyInterface, the branch demo_codyco has been merged in master so it is no more necessary to switch branches;

• The world with iCub and the chair in icub-gazebo moved to a new repository, icub-gazebo-wholebody. The new repo can be installed and used exactly as icub-gazebo, just append its path to your .bashrc;

• The branch demo_codyco in WBIToolbox-controllers has been updated and renamed as icub_chair.

I apologize if this update was not clearly documented before, I thought that for the moment it was enough to update the CODYCO_DEMO_README in icub_chair branch.

EDIT iCub stand up demo is working with icubGazeboSim and iCubGenova02

[gabrielenava]

cc @DanielePucci @iron76 @traversaro